
Non-Stop Playing
The Game Boy was not actually the first handheld video console, nor was it the most powerful, but its long-time playing capabilities (up 12 hours in fact) made it incredibly popular. By 1998 the Nintendo introduced the Game Boy Color raising sales 120 million worldwide. As one of the five-game cartridges included in the pack, the colorful game of blocks became a hit.
It Was Super Simple
How did it happen? The simplicity and no-narrative style made Tetris a real winner among all types. Anyone could play it, from total gaming nerds to people who had never even touched a video game in their life. In fact, incessant playing resulted in the new phenomena of thumb-blisters. Some people even had nightmares about -falling bricks. The fact that it was so insanely accessible made it loved by everyone.

Today
Alexey Leonidovich may have had to wait a few years until he made his fortune, but thanks to him we have one of the most popular video games in the world. The big question still remains, which game is more popular: Pacman or Tetris?