The Game on Fire is a mini-expansion for The Game: Spiel... so lange du kannst! that consists of six cards (22, 33, 44, 55, 66, 77). When one of these fire cards is played onto a pile, that card must be covered by the end of the next player's turn or else players have lost the game.
This expansion is contained in new editions of the game (Look for a blue note on the box cover). See The Game.