diff --git a/src/game.cc b/src/game.cc
index 648e501..47fadb1 100644
--- a/src/game.cc
+++ b/src/game.cc
@@ -1363,8 +1363,16 @@ static int gameDbInit()
         return -1;
     }
 
+    // SFALL: custom patch file name.
+    char* patch_filename = nullptr;
+    if (configGetString(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_PATCH_FILE, &patch_filename)) {
+        if (patch_filename == nullptr || *patch_file_name == '\0') {
+            patch_filename = "patch%03d.dat";
+        }
+    }
+
     for (patch_index = 0; patch_index < 1000; patch_index++) {
-        snprintf(filename, sizeof(filename), "patch%03d.dat", patch_index);
+        snprintf(filename, sizeof(filename), patch_filename, patch_index);
 
         if (compat_access(filename, 0) == 0) {
             dbOpen(filename, 0, NULL, 1);
diff --git a/src/game_config.cc b/src/game_config.cc
index 7063ec7..b3c0a1f 100644
--- a/src/game_config.cc
+++ b/src/game_config.cc
@@ -1,4 +1,5 @@
 #include "game_config.h"
+#include "sfall_config.h"
 
 #include <stdio.h>
 #include <string.h>
@@ -120,6 +121,14 @@ bool gameConfigInit(bool isMapper, int argc, char** argv)
         configSetInt(&gGameConfig, GAME_CONFIG_MAPPER_KEY, GAME_CONFIG_SORT_SCRIPT_LIST_KEY, 0);
     }
 
+    // SFALL: custom config file name.
+    char* configFileName = nullptr;
+    if (configGetString(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_CONFIG_FILE, &configFileName)) {
+        if (configFileName == nullptr || *configFileName == '\0') {
+            configFileName = DEFAULT_GAME_CONFIG_FILE_NAME;
+        }
+    }
+
     // Make `fallout2.cfg` file path.
     char* executable = argv[0];
     char* ch = strrchr(executable, '\\');
@@ -136,14 +145,14 @@ bool gameConfigInit(bool isMapper, int argc, char** argv)
                 sizeof(gGameConfigFilePath),
                 "%s\\%s",
                 executable,
-                GAME_CONFIG_FILE_NAME);
+                configFileName);
         }
         *ch = '\\';
     } else {
         if (isMapper) {
             strcpy(gGameConfigFilePath, MAPPER_CONFIG_FILE_NAME);
         } else {
-            strcpy(gGameConfigFilePath, GAME_CONFIG_FILE_NAME);
+            strcpy(gGameConfigFilePath, configFileName);
         }
     }
 
diff --git a/src/game_config.h b/src/game_config.h
index 78a1299..0c76377 100644
--- a/src/game_config.h
+++ b/src/game_config.h
@@ -5,7 +5,7 @@
 
 namespace fallout {
 
-#define GAME_CONFIG_FILE_NAME "fallout2.cfg"
+#define DEFAULT_GAME_CONFIG_FILE_NAME "fallout2.cfg"
 #define MAPPER_CONFIG_FILE_NAME "mapper2.cfg"
 
 #define GAME_CONFIG_SYSTEM_KEY "system"
diff --git a/src/sfall_config.cc b/src/sfall_config.cc
index 353bb37..85c2ce7 100644
--- a/src/sfall_config.cc
+++ b/src/sfall_config.cc
@@ -58,6 +58,9 @@ bool sfallConfigInit(int argc, char** argv)
     configSetInt(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_MOVIE_TIMER_ARTIMER3, 270);
     configSetInt(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_MOVIE_TIMER_ARTIMER4, 360);
     configSetInt(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_AUTO_QUICK_SAVE, 0);
+    configSetString(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_VERSION_STRING, "");
+    configSetString(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_CONFIG_FILE, "");
+    configSetString(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_PATCH_FILE, "");
 
     configSetString(&gSfallConfig, SFALL_CONFIG_SCRIPTS_KEY, SFALL_CONFIG_INI_CONFIG_FOLDER, "");
     configSetString(&gSfallConfig, SFALL_CONFIG_SCRIPTS_KEY, SFALL_CONFIG_GLOBAL_SCRIPT_PATHS, "");
diff --git a/src/sfall_config.h b/src/sfall_config.h
index da2c298..7d4b2fb 100644
--- a/src/sfall_config.h
+++ b/src/sfall_config.h
@@ -72,6 +72,9 @@ namespace fallout {
 #define SFALL_CONFIG_INI_CONFIG_FOLDER "IniConfigFolder"
 #define SFALL_CONFIG_GLOBAL_SCRIPT_PATHS "GlobalScriptPaths"
 #define SFALL_CONFIG_AUTO_QUICK_SAVE "AutoQuickSave"
+#define SFALL_CONFIG_VERSION_STRING "VersionString"
+#define SFALL_CONFIG_CONFIG_FILE "ConfigFile"
+#define SFALL_CONFIG_PATCH_FILE "PatchFile"
 
 #define SFALL_CONFIG_BURST_MOD_DEFAULT_CENTER_MULTIPLIER 1
 #define SFALL_CONFIG_BURST_MOD_DEFAULT_CENTER_DIVISOR 3
diff --git a/src/version.cc b/src/version.cc
index 4422bd3..ca4f7ad 100644
--- a/src/version.cc
+++ b/src/version.cc
@@ -1,4 +1,5 @@
 #include "version.h"
+#include "sfall_config.h"
 
 #include <stdio.h>
 
@@ -7,7 +8,14 @@ namespace fallout {
 // 0x4B4580
 void versionGetVersion(char* dest, size_t size)
 {
-    snprintf(dest, size, "FALLOUT II %d.%02d", VERSION_MAJOR, VERSION_MINOR);
+    // SFALL: custom version string.
+    char* versionString = nullptr;
+    if (configGetString(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_VERSION_STRING, &versionString)) {
+        if (*versionString == '\0') {
+            versionString = nullptr;
+        }
+    }
+    snprintf(dest, size, (versionString != nullptr ? versionString : "FALLOUT II %d.%02d"), VERSION_MAJOR, VERSION_MINOR);
 }
 
 } // namespace fallout