Someone made the claim that "every game is nothing but pixels", possibly in jest. The conversation involved reducing computer games to a minimum, and maybe pixels are some sort of minimum that every game has? To this audio-only games were mentioned, or that one might interface with a game via punch cards or a print-out and response form to fill in: play by mail games, for example. A generous definition of pixel might include the game of Go, though writing yet another grid-based game was rejected by the author of "Hunt the Wumpus", where the caves or really graph nodes (spoilers!) connect as a dodecahedron, and where most play the game through some sort of grid-based pixel interface.