Pacman

The original game in a browser.

Who doesn't know what pacman is? Really, I want to know. This game is about a yellow circle that eats cookies (and occasionally ghosts).

Breakout

Breakout is most famous for its Atari 2600 port, however, the game was originally found in cabinets.

Bounce the ball off the paddle and hit the rectangles. It's really that simple. This game was played by children. If you can't beat it, you are inferior to them.