In 10 games or less, What would you say were the games that defined the Atari 2600? Consider It's capabilities, uniqueness, pop culture, what is what like to be a user in it's lifetime.
My picks would be:
Combat
Video Olympics
Because they were the types of games that the console was originally designed to be able to play. Featuring head-to-head gaming and Video Olympics utilizing the paddle controllers.
Space Invaders
Pac-man
The system's 2 best selling games. Ports of massively popular arcade games. Maybe include Ms Pac Man also to show that the console was capable of a good version of the game.
Pitfall - the best selling 3rd party game, a platformer
Warlords - 4 players fight against each other with the paddle controllers
Other possibilities? Night Driver representing driving games, E.T. for the hype and let down, Breakout a popular paddle game, Adventure