diff --git a/src/game.cc b/src/game.cc
index add04ff..aae3a83 100644
--- a/src/game.cc
+++ b/src/game.cc
@@ -891,6 +891,24 @@ int gameSetGlobalVar(int var, int value)
         return -1;
     }
 
+    // SFALL: Display karma changes.
+    if (var == GVAR_PLAYER_REPUTATION) {
+        bool shouldDisplayKarmaChanges = false;
+        configGetBool(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_DISPLAY_KARMA_CHANGES_KEY, &shouldDisplayKarmaChanges);
+        if (shouldDisplayKarmaChanges) {
+            int diff = value - gGameGlobalVars[var];
+            if (diff != 0) {
+                char formattedMessage[80];
+                if (diff > 0) {
+                    sprintf(formattedMessage, "You gained %d karma.", diff);
+                } else {
+                    sprintf(formattedMessage, "You lost %d karma.", -diff);
+                }
+                displayMonitorAddMessage(formattedMessage);
+            }
+        }
+    }
+
     gGameGlobalVars[var] = value;
 
     return 0;
diff --git a/src/sfall_config.cc b/src/sfall_config.cc
index 3e82246..8de82ea 100644
--- a/src/sfall_config.cc
+++ b/src/sfall_config.cc
@@ -29,6 +29,7 @@ bool sfallConfigInit(int argc, char** argv)
     configSetInt(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_MAIN_MENU_FONT_COLOR, 0);
     configSetInt(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_SKIP_OPENING_MOVIES_KEY, 0);
     configSetString(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_STARTING_MAP_KEY, "");
+    configSetBool(&gSfallConfig, SFALL_CONFIG_MISC_KEY, SFALL_CONFIG_DISPLAY_KARMA_CHANGES_KEY, false);
 
     char path[COMPAT_MAX_PATH];
     char* executable = argv[0];
diff --git a/src/sfall_config.h b/src/sfall_config.h
index be583be..4c576cf 100644
--- a/src/sfall_config.h
+++ b/src/sfall_config.h
@@ -15,6 +15,7 @@
 #define SFALL_CONFIG_MAIN_MENU_FONT_COLOR "MainMenuFontColour"
 #define SFALL_CONFIG_SKIP_OPENING_MOVIES_KEY "SkipOpeningMovies"
 #define SFALL_CONFIG_STARTING_MAP_KEY "StartingMap"
+#define SFALL_CONFIG_DISPLAY_KARMA_CHANGES_KEY "DisplayKarmaChanges"
 
 extern bool gSfallConfigInitialized;
 extern Config gSfallConfig;