diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..a8eacdb
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,4 @@
+---
+BasedOnStyle: Google
+IndentWidth: 4
+---
diff --git a/aimeio/aimeio.c b/aimeio/aimeio.c
index 17de30e..8192bae 100644
--- a/aimeio/aimeio.c
+++ b/aimeio/aimeio.c
@@ -12,6 +12,7 @@
 
 #include "util/crc.h"
 #include "util/dprintf.h"
+#include "util/env.h"
 
 struct aime_io_config {
     wchar_t aime_path[MAX_PATH];
@@ -222,7 +223,7 @@ uint16_t aime_io_get_api_version(void)
 
 HRESULT aime_io_init(void)
 {
-    aime_io_config_read(&aime_io_cfg, L".\\segatools.ini");
+    aime_io_config_read(&aime_io_cfg, get_config_path());
 
     return S_OK;
 }
diff --git a/carolhook/dllmain.c b/carolhook/dllmain.c
index cc422b9..762b33d 100644
--- a/carolhook/dllmain.c
+++ b/carolhook/dllmain.c
@@ -53,6 +53,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE carol_hook_mod;
 static process_entry_t carol_startup;
@@ -100,7 +101,7 @@ static DWORD CALLBACK carol_pre_startup(void)
 
     /* Config load */
 
-    carol_hook_config_load(&carol_hook_cfg, L".\\segatools.ini");
+    carol_hook_config_load(&carol_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -164,7 +165,7 @@ static DWORD CALLBACK carol_pre_startup(void)
     }
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  carol_pre_startup ---\n");
 
diff --git a/carolio/carolio.c b/carolio/carolio.c
index 5368da6..7582489 100644
--- a/carolio/carolio.c
+++ b/carolio/carolio.c
@@ -8,6 +8,7 @@
 #include "carolio/carolio.h"
 #include "carolio/config.h"
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static unsigned int __stdcall carol_io_touch_thread_proc(void *ctx);
 
@@ -25,7 +26,7 @@ uint16_t carol_io_get_api_version(void)
 
 HRESULT carol_io_jvs_init(void)
 {
-    carol_io_config_load(&carol_io_cfg, L".\\segatools.ini");
+    carol_io_config_load(&carol_io_cfg, get_config_path());
 
     return S_OK;
 }
@@ -178,4 +179,4 @@ static unsigned int __stdcall carol_io_touch_thread_proc(void *ctx)
     }
 
     return 0;
-}
\ No newline at end of file
+}
diff --git a/chunihook/dllmain.c b/chunihook/dllmain.c
index 81c8910..d421e23 100644
--- a/chunihook/dllmain.c
+++ b/chunihook/dllmain.c
@@ -36,6 +36,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE chuni_hook_mod;
 static process_entry_t chuni_startup;
@@ -71,7 +72,7 @@ static DWORD CALLBACK chuni_pre_startup(void)
 
     /* Config load */
 
-    chuni_hook_config_load(&chuni_hook_cfg, L".\\segatools.ini");
+    chuni_hook_config_load(&chuni_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -129,7 +130,7 @@ static DWORD CALLBACK chuni_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  chuni_pre_startup ---\n");
 
diff --git a/chuniio/chuniio.c b/chuniio/chuniio.c
index 27fe7b0..5d87215 100644
--- a/chuniio/chuniio.c
+++ b/chuniio/chuniio.c
@@ -10,6 +10,7 @@
 #include "chuniio/ledoutput.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static unsigned int __stdcall chuni_io_slider_thread_proc(void *ctx);
 
@@ -27,7 +28,7 @@ uint16_t chuni_io_get_api_version(void)
 
 HRESULT chuni_io_jvs_init(void)
 {
-    chuni_io_config_load(&chuni_io_cfg, L".\\segatools.ini");
+    chuni_io_config_load(&chuni_io_cfg, get_config_path());
     
     led_init_mutex = CreateMutex(
         NULL,              // default security attributes
diff --git a/chusanhook/dllmain.c b/chusanhook/dllmain.c
index 85c6228..9a2f5da 100644
--- a/chusanhook/dllmain.c
+++ b/chusanhook/dllmain.c
@@ -49,6 +49,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE chusan_hook_mod;
 static process_entry_t chusan_startup;
@@ -84,7 +85,7 @@ static DWORD CALLBACK chusan_pre_startup(void)
 
     /* Config load */
 
-    chusan_hook_config_load(&chusan_hook_cfg, L".\\segatools.ini");
+    chusan_hook_config_load(&chusan_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
     
@@ -173,7 +174,7 @@ static DWORD CALLBACK chusan_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  chusan_pre_startup ---\n");
 
diff --git a/cmhook/dllmain.c b/cmhook/dllmain.c
index 7020f75..03ace58 100644
--- a/cmhook/dllmain.c
+++ b/cmhook/dllmain.c
@@ -35,6 +35,7 @@
 #include "unityhook/hook.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE cm_hook_mod;
 static process_entry_t cm_startup;
@@ -48,7 +49,7 @@ static DWORD CALLBACK cm_pre_startup(void)
 
     /* Load config */
 
-    cm_hook_config_load(&cm_hook_cfg, L".\\segatools.ini");
+    cm_hook_config_load(&cm_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -105,7 +106,7 @@ static DWORD CALLBACK cm_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  cm_pre_startup ---\n");
 
diff --git a/cmio/cmio.c b/cmio/cmio.c
index c2dbfa5..e1cacde 100644
--- a/cmio/cmio.c
+++ b/cmio/cmio.c
@@ -6,6 +6,7 @@
 
 #include "cmio/cmio.h"
 #include "cmio/config.h"
+#include "util/env.h"
 
 static uint8_t cm_opbtn;
 static struct cm_io_config cm_io_cfg;
@@ -18,7 +19,7 @@ uint16_t cm_io_get_api_version(void)
 
 HRESULT cm_io_init(void)
 {
-    cm_io_config_load(&cm_io_cfg, L".\\segatools.ini");
+    cm_io_config_load(&cm_io_cfg, get_config_path());
     return S_OK;
 }
 
diff --git a/cxbhook/dllmain.c b/cxbhook/dllmain.c
index 18aaa7f..d644b5e 100644
--- a/cxbhook/dllmain.c
+++ b/cxbhook/dllmain.c
@@ -23,6 +23,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE cxb_hook_mod;
 static process_entry_t cxb_startup;
@@ -58,7 +59,7 @@ static DWORD CALLBACK cxb_pre_startup(void)
 
     /* Config load */
 
-    cxb_hook_config_load(&cxb_hook_cfg, L".\\segatools.ini");
+    cxb_hook_config_load(&cxb_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -110,7 +111,7 @@ static DWORD CALLBACK cxb_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  cxb_pre_startup ---\n");
 
diff --git a/cxbio/cxbio.c b/cxbio/cxbio.c
index d021d3c..fce594d 100644
--- a/cxbio/cxbio.c
+++ b/cxbio/cxbio.c
@@ -8,6 +8,7 @@
 #include "cxbio/config.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static bool cxb_io_coin;
 static int cxb_io_coins;
@@ -21,7 +22,7 @@ uint16_t cxb_io_get_api_version(void)
 HRESULT cxb_io_revio_init(void)
 {
     dprintf("CXB IO: REVIO init\n");
-    cxb_io_config_load(&cxb_io_cfg, L".\\segatools.ini");
+    cxb_io_config_load(&cxb_io_cfg, get_config_path());
 
     return S_OK;
 }
@@ -75,4 +76,4 @@ HRESULT cxb_io_led_init(void)
 }
 
 void cxb_io_led_update(int id, int color)
-{}
\ No newline at end of file
+{}
diff --git a/divahook/dllmain.c b/divahook/dllmain.c
index 337eff5..eb6e16f 100644
--- a/divahook/dllmain.c
+++ b/divahook/dllmain.c
@@ -33,6 +33,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE diva_hook_mod;
 static process_entry_t diva_startup;
@@ -58,7 +59,7 @@ static DWORD CALLBACK diva_pre_startup(void)
 
     /* Config load */
 
-    diva_hook_config_load(&diva_hook_cfg, L".\\segatools.ini");
+    diva_hook_config_load(&diva_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -105,7 +106,7 @@ static DWORD CALLBACK diva_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  diva_pre_startup ---\n");
 
diff --git a/divaio/divaio.c b/divaio/divaio.c
index 9976cb7..0001f2e 100644
--- a/divaio/divaio.c
+++ b/divaio/divaio.c
@@ -7,6 +7,7 @@
 
 #include "divaio/divaio.h"
 #include "divaio/config.h"
+#include "util/env.h"
 
 static unsigned int __stdcall diva_io_slider_thread_proc(void *ctx);
 
@@ -23,7 +24,7 @@ uint16_t diva_io_get_api_version(void)
 
 HRESULT diva_io_jvs_init(void)
 {
-    diva_io_config_load(&diva_io_cfg, L".\\segatools.ini");
+    diva_io_config_load(&diva_io_cfg, get_config_path());
 
     return S_OK;
 }
diff --git a/doc/config/common.md b/doc/config/common.md
index 3c86751..0033b5e 100644
--- a/doc/config/common.md
+++ b/doc/config/common.md
@@ -6,6 +6,17 @@ all games.
 Keyboard binding settings use
 [Virtual-Key Codes](https://docs.microsoft.com/en-us/windows/win32/inputdev/virtual-key-codes).
 
+## Config Path
+The default file path for config file is `./segatools.ini`.
+
+You can modify environment variable `SEGATOOLS_CONFIG_PATH` to another path.
+
+For example, You can have a another start.bat with following code in it,
+Then you can copy `segatools.ini` to `another_config.ini` but with different dns host in it
+```bat
+set SEGATOOLS_CONFIG_PATH=.\another_config.ini
+```
+
 ## `[aimeio]`
 
 Controls the card reader driver.
diff --git a/fgohook/dllmain.c b/fgohook/dllmain.c
index 9bc3694..e82423f 100644
--- a/fgohook/dllmain.c
+++ b/fgohook/dllmain.c
@@ -44,6 +44,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE fgo_hook_mod;
 static process_entry_t fgo_startup;
@@ -69,7 +70,7 @@ static DWORD CALLBACK fgo_pre_startup(void)
 
     /* Load config */
 
-    fgo_hook_config_load(&fgo_hook_cfg, L".\\segatools.ini");
+    fgo_hook_config_load(&fgo_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -147,7 +148,7 @@ static DWORD CALLBACK fgo_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  fgo_pre_startup ---\n");
 
diff --git a/fgoio/fgoio.c b/fgoio/fgoio.c
index 61f7d77..4a362a0 100644
--- a/fgoio/fgoio.c
+++ b/fgoio/fgoio.c
@@ -8,6 +8,7 @@
 #include "fgoio/fgoio.h"
 #include "fgoio/config.h"
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static uint8_t fgo_opbtn;
 static uint8_t fgo_gamebtn;
@@ -23,7 +24,7 @@ uint16_t fgo_io_get_api_version(void)
 
 HRESULT fgo_io_init(void)
 {
-    fgo_io_config_load(&fgo_io_cfg, L".\\segatools.ini");
+    fgo_io_config_load(&fgo_io_cfg, get_config_path());
 
     return S_OK;
 }
diff --git a/idachook/dllmain.c b/idachook/dllmain.c
index 2e82882..0e955e8 100644
--- a/idachook/dllmain.c
+++ b/idachook/dllmain.c
@@ -36,6 +36,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE idac_hook_mod;
 static process_entry_t idac_startup;
@@ -49,7 +50,7 @@ static DWORD CALLBACK idac_pre_startup(void)
 
     /* Config load */
 
-    idac_hook_config_load(&idac_hook_cfg, L".\\segatools.ini");
+    idac_hook_config_load(&idac_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -109,7 +110,7 @@ static DWORD CALLBACK idac_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  idac_pre_startup ---\n");
 
diff --git a/idacio/dllmain.c b/idacio/dllmain.c
index f295f90..6a5dba8 100644
--- a/idacio/dllmain.c
+++ b/idacio/dllmain.c
@@ -12,6 +12,7 @@
 
 #include "util/dprintf.h"
 #include "util/str.h"
+#include "util/env.h"
 
 static struct idac_io_config idac_io_cfg;
 static const struct idac_io_backend *idac_io_backend;
@@ -38,7 +39,7 @@ HRESULT idac_io_init(void)
         return hr;
     }
 
-    idac_io_config_load(&idac_io_cfg, L".\\segatools.ini");
+    idac_io_config_load(&idac_io_cfg, get_config_path());
 
     if (wstr_ieq(idac_io_cfg.mode, L"dinput")) {
         hr = idac_di_init(&idac_io_cfg.di, inst, &idac_io_backend);
diff --git a/idzhook/dllmain.c b/idzhook/dllmain.c
index e9d807a..edf6cbb 100644
--- a/idzhook/dllmain.c
+++ b/idzhook/dllmain.c
@@ -40,6 +40,7 @@
 
 #include "util/dprintf.h"
 #include "util/lib.h"
+#include "util/env.h"
 
 static HMODULE idz_hook_mod;
 static process_entry_t idz_startup;
@@ -55,7 +56,7 @@ static DWORD CALLBACK idz_pre_startup(void)
 
     /* Config load */
 
-    idz_hook_config_load(&idz_hook_cfg, L".\\segatools.ini");
+    idz_hook_config_load(&idz_hook_cfg, get_config_path());
     
     module_path = module_file_name(NULL);
 
@@ -136,7 +137,7 @@ static DWORD CALLBACK idz_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  idz_pre_startup ---\n");
 
diff --git a/idzio/dllmain.c b/idzio/dllmain.c
index 5c8592d..39d08fc 100644
--- a/idzio/dllmain.c
+++ b/idzio/dllmain.c
@@ -12,6 +12,7 @@
 
 #include "util/dprintf.h"
 #include "util/str.h"
+#include "util/env.h"
 
 static struct idz_io_config idz_io_cfg;
 static const struct idz_io_backend *idz_io_backend;
@@ -39,7 +40,7 @@ HRESULT idz_io_jvs_init(void)
         return hr;
     }
 
-    idz_io_config_load(&idz_io_cfg, L".\\segatools.ini");
+    idz_io_config_load(&idz_io_cfg, get_config_path());
 
     if (wstr_ieq(idz_io_cfg.mode, L"dinput")) {
         hr = idz_di_init(&idz_io_cfg.di, inst, &idz_io_backend);
diff --git a/kemonohook/dllmain.c b/kemonohook/dllmain.c
index 5eac13d..0fedd5e 100644
--- a/kemonohook/dllmain.c
+++ b/kemonohook/dllmain.c
@@ -22,6 +22,7 @@
 #include "unityhook/hook.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE kemono_hook_mod;
 static process_entry_t kemono_startup;
@@ -35,7 +36,7 @@ static DWORD CALLBACK kemono_pre_startup(void) {
     /* Load config */
 
     kemono_hook_cfg.aime.dll.path64 = true;
-    kemono_hook_config_load(&kemono_hook_cfg, L".\\segatools.ini");
+    kemono_hook_config_load(&kemono_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -107,7 +108,7 @@ static DWORD CALLBACK kemono_pre_startup(void) {
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  kemono_pre_startup ---\n");
 
diff --git a/kemonoio/kemonoio.c b/kemonoio/kemonoio.c
index 5b24c28..932abb1 100644
--- a/kemonoio/kemonoio.c
+++ b/kemonoio/kemonoio.c
@@ -7,6 +7,7 @@
 
 #include "kemonoio/kemonoio.h"
 #include "kemonoio/config.h"
+#include "util/env.h"
 
 static uint8_t kemono_opbtn;
 static uint16_t kemono_pbtn;
@@ -19,7 +20,7 @@ uint16_t kemono_io_get_api_version(void) {
 }
 
 HRESULT kemono_io_init(void) {
-    kemono_io_config_load(&kemono_io_cfg, L".\\segatools.ini");
+    kemono_io_config_load(&kemono_io_cfg, get_config_path());
 
     kemono_io_coins = 0;
 
@@ -106,4 +107,4 @@ void kemono_io_led_set_colors(uint8_t board, uint8_t *rgb) {
 
 void kemono_io_jvs_write_gpio(uint32_t state){
 
-}
\ No newline at end of file
+}
diff --git a/mai2hook/dllmain.c b/mai2hook/dllmain.c
index ac14649..0d8b20a 100644
--- a/mai2hook/dllmain.c
+++ b/mai2hook/dllmain.c
@@ -39,6 +39,7 @@
 #include "unityhook/hook.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE mai2_hook_mod;
 static process_entry_t mai2_startup;
@@ -54,7 +55,7 @@ static DWORD CALLBACK mai2_pre_startup(void)
 
     /* Load config */
 
-    mai2_hook_config_load(&mai2_hook_cfg, L".\\segatools.ini");
+    mai2_hook_config_load(&mai2_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -106,7 +107,7 @@ static DWORD CALLBACK mai2_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  mai2_pre_startup ---\n");
 
diff --git a/mai2io/mai2io.c b/mai2io/mai2io.c
index 40d6bfb..ffdbfcf 100644
--- a/mai2io/mai2io.c
+++ b/mai2io/mai2io.c
@@ -5,6 +5,7 @@
 
 #include "mai2io/mai2io.h"
 #include "mai2io/config.h"
+#include "util/env.h"
 
 static uint8_t mai2_opbtn;
 static uint16_t mai2_player1_btn;
@@ -19,7 +20,7 @@ uint16_t mai2_io_get_api_version(void)
 
 HRESULT mai2_io_init(void)
 {
-    mai2_io_config_load(&mai2_io_cfg, L".\\segatools.ini");
+    mai2_io_config_load(&mai2_io_cfg, get_config_path());
 
     return S_OK;
 }
@@ -140,4 +141,4 @@ void mai2_io_get_gamebtns(uint16_t *player1, uint16_t *player2)
     if (player2 != NULL ){
         *player2 = mai2_player2_btn;
     }
-}
\ No newline at end of file
+}
diff --git a/mercuryhook/dllmain.c b/mercuryhook/dllmain.c
index ea30458..43984f9 100644
--- a/mercuryhook/dllmain.c
+++ b/mercuryhook/dllmain.c
@@ -34,6 +34,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE mercury_hook_mod;
 static process_entry_t mercury_startup;
@@ -49,7 +50,7 @@ static DWORD CALLBACK mercury_pre_startup(void)
 
     /* Load config */
 
-    mercury_hook_config_load(&mercury_hook_cfg, L".\\segatools.ini");
+    mercury_hook_config_load(&mercury_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -102,7 +103,7 @@ static DWORD CALLBACK mercury_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  mercury_pre_startup ---\n");
 
diff --git a/mercuryio/mercuryio.c b/mercuryio/mercuryio.c
index 6d38ff1..438c9e6 100644
--- a/mercuryio/mercuryio.c
+++ b/mercuryio/mercuryio.c
@@ -7,6 +7,7 @@
 #include "mercuryio/mercuryio.h"
 #include "mercuryio/config.h"
 #include "mercuryhook/elisabeth.h"
+#include "util/env.h"
 
 static unsigned int __stdcall mercury_io_touch_thread_proc(void *ctx);
 
@@ -23,7 +24,7 @@ uint16_t mercury_io_get_api_version(void)
 
 HRESULT mercury_io_init(void)
 {
-    mercury_io_config_load(&mercury_io_cfg, L".\\segatools.ini");
+    mercury_io_config_load(&mercury_io_cfg, get_config_path());
 
     return S_OK;
 }
diff --git a/minihook/dllmain.c b/minihook/dllmain.c
index bdc45b8..c72609f 100644
--- a/minihook/dllmain.c
+++ b/minihook/dllmain.c
@@ -14,6 +14,7 @@
 #include "platform/nusec.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static process_entry_t app_startup;
 
@@ -26,10 +27,10 @@ static DWORD CALLBACK app_pre_startup(void)
 
     dprintf("--- Begin %s ---\n", __func__);
 
-    clock_config_load(&clock_cfg, L".\\segatools.ini");
-    ds_config_load(&ds_cfg, L".\\segatools.ini");
-    nusec_config_load(&nusec_cfg, L".\\segatools.ini");
-    spike_hook_init(L".\\segatools.ini");
+    clock_config_load(&clock_cfg, get_config_path());
+    ds_config_load(&ds_cfg, get_config_path());
+    nusec_config_load(&nusec_cfg, get_config_path());
+    spike_hook_init(get_config_path());
 
     hr = clock_hook_init(&clock_cfg);
 
diff --git a/msvc-build.bat b/msvc-build.bat
index d485839..ae060f0 100644
--- a/msvc-build.bat
+++ b/msvc-build.bat
@@ -31,7 +31,7 @@ if /I "%1"=="build" (
     set VSVARSALL=!VSVARSALL!
     set MESON=!MESON!
 
-    call :build
+    call :build %2
 
     echo.
     echo Build done!
@@ -42,9 +42,12 @@ if /I "%1"=="zip" (
     exit /b
 )
 
-echo %~nx0 [action]
+echo %~nx0 [action] [switch]
 echo     build: Build the for both x86 and x64
+echo        /PROJECTONLY: Only create projects
+echo.
 echo     zip: Make zip file
+echo.
 exit /b
 
 rem This should works for Visual Studio 2017+
@@ -85,6 +88,7 @@ rem This should works for Visual Studio 2017+
 )
 
 :detect-meson (
+    set MESON=""
     for /f "tokens=* usebackq" %%i in (`where meson`) do set MESON="%%i"
     if not exist %MESON% (
         exit /b 1
@@ -98,28 +102,32 @@ rem This should works for Visual Studio 2017+
         call %VSVARSALL% x64
 
         if exist %BUILD_DIR_64% (
-            %MESON% setup %BUILD_DIR_64% --backend vs --buildtype release --reconfigure
+            %MESON% setup %BUILD_DIR_64% --buildtype release --reconfigure
         ) else (
             %MESON% setup %BUILD_DIR_64% --backend vs --buildtype release
         )
 
-        pushd %BUILD_DIR_64%
-        msbuild /m /p:Configuration=release /p:Platform=x64 segatools.sln
-        popd
+        if /I not "%1"=="/PROJECTONLY" (
+            pushd %BUILD_DIR_64%
+            msbuild /m /p:Configuration=release /p:Platform=x64 segatools.sln
+            popd
+        )
     )
 
     :build_x86 (
         call %VSVARSALL% x86
 
         if exist %BUILD_DIR_32% (
-            %MESON% setup %BUILD_DIR_32% --backend vs --buildtype release --reconfigure
+            %MESON% setup %BUILD_DIR_32% --buildtype release --reconfigure
         ) else (
             %MESON% setup %BUILD_DIR_32% --backend vs --buildtype release
         )
 
-        pushd %BUILD_DIR_32%
-        msbuild /m /p:Configuration=release /p:Platform=Win32 segatools.sln
-        popd
+        if /I not "%1"=="/PROJECTONLY" (
+            pushd %BUILD_DIR_32%
+            msbuild /m /p:Configuration=release /p:Platform=Win32 segatools.sln
+            popd
+        )
     )
 
     :end (
diff --git a/mu3hook/dllmain.c b/mu3hook/dllmain.c
index e991b40..e4336e9 100644
--- a/mu3hook/dllmain.c
+++ b/mu3hook/dllmain.c
@@ -38,6 +38,7 @@
 #include "unityhook/hook.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE mu3_hook_mod;
 static process_entry_t mu3_startup;
@@ -51,7 +52,7 @@ static DWORD CALLBACK mu3_pre_startup(void)
 
     /* Load config */
 
-    mu3_hook_config_load(&mu3_hook_cfg, L".\\segatools.ini");
+    mu3_hook_config_load(&mu3_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -114,7 +115,7 @@ static DWORD CALLBACK mu3_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  mu3_pre_startup ---\n");
 
diff --git a/mu3io/mu3io.c b/mu3io/mu3io.c
index 2658612..aaa5687 100644
--- a/mu3io/mu3io.c
+++ b/mu3io/mu3io.c
@@ -9,6 +9,7 @@
 #include "mu3io/ledoutput.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static uint8_t mu3_opbtn;
 static uint8_t mu3_left_btn;
@@ -28,7 +29,7 @@ uint16_t mu3_io_get_api_version(void)
 
 HRESULT mu3_io_init(void)
 {
-    mu3_io_config_load(&mu3_io_cfg, L".\\segatools.ini");
+    mu3_io_config_load(&mu3_io_cfg, get_config_path());
 
     dprintf("XInput: --- Begin configuration ---\n");
     dprintf("XInput: Mouse lever emulation : %i\n", mu3_io_cfg.use_mouse);
diff --git a/swdchook/dllmain.c b/swdchook/dllmain.c
index bd6a1b3..d83798c 100644
--- a/swdchook/dllmain.c
+++ b/swdchook/dllmain.c
@@ -36,6 +36,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE swdc_hook_mod;
 static process_entry_t swdc_startup;
@@ -49,7 +50,7 @@ static DWORD CALLBACK swdc_pre_startup(void)
 
     /* Config load */
 
-    swdc_hook_config_load(&swdc_hook_cfg, L".\\segatools.ini");
+    swdc_hook_config_load(&swdc_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -112,7 +113,7 @@ static DWORD CALLBACK swdc_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  swdc_pre_startup ---\n");
 
diff --git a/swdcio/dllmain.c b/swdcio/dllmain.c
index c2c5078..8057e23 100644
--- a/swdcio/dllmain.c
+++ b/swdcio/dllmain.c
@@ -12,6 +12,7 @@
 
 #include "util/dprintf.h"
 #include "util/str.h"
+#include "util/env.h"
 
 static struct swdc_io_config swdc_io_cfg;
 static const struct swdc_io_backend *swdc_io_backend;
@@ -38,7 +39,7 @@ HRESULT swdc_io_init(void)
         return hr;
     }
 
-    swdc_io_config_load(&swdc_io_cfg, L".\\segatools.ini");
+    swdc_io_config_load(&swdc_io_cfg, get_config_path());
 
     if (wstr_ieq(swdc_io_cfg.mode, L"dinput")) {
         hr = swdc_di_init(&swdc_io_cfg.di, inst, &swdc_io_backend);
diff --git a/tokyohook/dllmain.c b/tokyohook/dllmain.c
index e39fcff..19a1517 100644
--- a/tokyohook/dllmain.c
+++ b/tokyohook/dllmain.c
@@ -26,6 +26,7 @@
 #include "platform/platform.h"
 
 #include "util/dprintf.h"
+#include "util/env.h"
 
 static HMODULE tokyo_hook_mod;
 static process_entry_t tokyo_startup;
@@ -39,7 +40,7 @@ static DWORD CALLBACK tokyo_pre_startup(void)
 
     /* Load config */
 
-    tokyo_hook_config_load(&tokyo_hook_cfg, L".\\segatools.ini");
+    tokyo_hook_config_load(&tokyo_hook_cfg, get_config_path());
 
     /* Hook Win32 APIs */
 
@@ -80,7 +81,7 @@ static DWORD CALLBACK tokyo_pre_startup(void)
 
     /* Initialize debug helpers */
 
-    spike_hook_init(L".\\segatools.ini");
+    spike_hook_init(get_config_path());
 
     dprintf("---  End  tokyo_pre_startup ---\n");
 
diff --git a/tokyoio/dllmain.c b/tokyoio/dllmain.c
index 76c81ac..18d0039 100644
--- a/tokyoio/dllmain.c
+++ b/tokyoio/dllmain.c
@@ -12,6 +12,7 @@
 
 #include "util/dprintf.h"
 #include "util/str.h"
+#include "util/env.h"
 
 static struct tokyo_io_config tokyo_io_cfg;
 static const struct tokyo_io_backend *tokyo_io_backend;
@@ -38,7 +39,7 @@ HRESULT tokyo_io_init(void)
         return hr;
     }
 
-    tokyo_io_config_load(&tokyo_io_cfg, L".\\segatools.ini");
+    tokyo_io_config_load(&tokyo_io_cfg, get_config_path());
 
     if (wstr_ieq(tokyo_io_cfg.mode, L"keyboard")) {
         hr = tokyo_kb_init(&tokyo_io_cfg.kb, &tokyo_io_backend);
diff --git a/util/env.c b/util/env.c
new file mode 100644
index 0000000..ae25a3f
--- /dev/null
+++ b/util/env.c
@@ -0,0 +1,11 @@
+#include "env.h"
+
+const wchar_t* get_config_path() {
+    static wchar_t path[MAX_PATH];
+    if (!GetEnvironmentVariableW(L"SEGATOOLS_CONFIG_PATH", path, MAX_PATH))
+    {
+        return L".\\segatools.ini";
+    }
+
+    return path;
+}
diff --git a/util/env.h b/util/env.h
new file mode 100644
index 0000000..c62194a
--- /dev/null
+++ b/util/env.h
@@ -0,0 +1,4 @@
+#pragma once
+#include <windows.h>
+
+const wchar_t* get_config_path();
diff --git a/util/meson.build b/util/meson.build
index 2c29609..4acae1a 100644
--- a/util/meson.build
+++ b/util/meson.build
@@ -24,5 +24,7 @@ util_lib = static_library(
         'lib.h',
         'str.c',
         'str.h',
+        'env.c',
+        'env.h',
     ],
 )