wat game is the best selling game of all time?

[thetonestarr]

Super Mario Bros. for the NES is the best-seller of all-time at 40.24m.

If you don't count pack-ins, then it's Pokémon Red/Blue/Green for GameBoy at 31.38m.

If you don't count games with slight variations, then it's Tetris for the GameBoy at 30.26m.