diff --git a/river/.config/river/init b/river/.config/river/init
index 816ff22..492202d 100755
--- a/river/.config/river/init
+++ b/river/.config/river/init
@@ -34,6 +34,7 @@ riverctl rule-add -app-id Element tags 16 # Move Element to tag 5
 riverctl rule-add -app-id pavucontrol float # Float pavucontrol
 riverctl rule-add -app-id steam -title "Friends List" float # Float Steam Friends
 riverctl rule-add -app-id steam tags 32 # Move Steam to tag 6
+riverctl rule-add -app-id tf_linux64 fullscreen # Fullscreen Team Fortress 2 (running in borderless window)
 riverctl rule-add -app-id vesktop tags 8 # Move Vesktop to tag 4
 riverctl rule-add -app-id "waydroid*" fullscreen # Fullscreen all Waydroid applications
 riverctl rule-add -app-id windowkill csd