Any game on this site, whatever's on the TV. It finds the game and takes your phone straight to it.
Bookmark this one. gerbilhamsterrecords.com/join works for every game with a room code. The couch games (Bean There, Gumming For Ya, Mount Fretsuvius, Junk Armada) take you to their phone controller.
Nothing? The TV might have started a new room since you looked. Check the letters on it and try again.