diff -ruN tuxracer-0.61/src/game_config.c tuxracer-0.61-banan_os/src/game_config.c
--- tuxracer-0.61/src/game_config.c	2001-01-30 22:04:43.000000000 +0200
+++ tuxracer-0.61-banan_os/src/game_config.c	2025-06-26 04:03:28.015311092 +0300
@@ -505,7 +505,7 @@
         "# decreasing this number, at the cost of lower image quality." );
 
     INIT_PARAM_BOOL( 
-	fullscreen, True,
+	fullscreen, False,
 	"# If true then the game will run in full-screen mode." );
 
     INIT_PARAM_INT(