diff --git a/home/system/hyprland/default.nix b/home/system/hyprland/default.nix
index fbe48e61..8cd4e651 100644
--- a/home/system/hyprland/default.nix
+++ b/home/system/hyprland/default.nix
@@ -133,6 +133,9 @@ in {
         "match:class helium, suppress_event fullscreen"
         "match:class helium, sync_fullscreen false"
 
+        "match:class ^(steam_app_.*)$, suppress_event fullscreen"
+        "match:class ^(steam_app_.*)$, sync_fullscreen false"
+
         "match:class proton-authenticator, float on"
         "match:class proton-authenticator, center on"
         "match:class proton-authenticator, size 500 400"