What is the most popular game in all of gaming history?

Answer 1

Arranged by consoles; Subject to change anytime soon:

Best selling games by console

For the Atari: Pac Man

For Nintendo (NES): Super Mario Bros.

(SNES): Super Mario World

(N64): Super Mario 64

(GameCube): Super Smash Bros., Melee

(Wii): Wii Sports*

2nd: Mario Kart Wii

(Gameboy&Gameboy Color): Tetris*

2nd: Pokemon Red/Blue/Green

(Gameboy Advance[sp]): Pokemon Ruby/Sapphire

(Nintendo DS): New Super Mario Bros.

(3DS): Super Mario 3D Land

For Sega (Mega Drive/Genesis): Sonic the Hedgehog

(Saturn): Virtua Fighter 2

(Dreamcast): Sonic Adventure

For Microsoft (Xbox): Halo 2

(Xbox 360): Kinnect Adventures

For Sony (Playstation): Gran Turismo

(PS2): Grand Theft Auto:San Andreas

(PS3): Gran Turismo 5

(PSP): Monster Hunter Portable 3rd

For PC (Windows, Mac OS X. Linux): Sims 2

One could arguably say that the Mario series is quite possibly the most popular gaming franchise in all gaming history. However, Tetris is widley recognized as a world-wide best-selling game.

*These games originally came with the system they were bundled with. Thus, the second best-selling game is also listed.