What's the oldest game you've played, and what was the experience like?

[Zippy6]

Breakout for the Atari 2600 is probably the oldest. Also played other 2600 games like Yars Revenge, Centipede, Missile Command and Circus Atari.

These days they'd basically just be equivalent to a minigame on a loading screen or a Wario Ware microgame.

They can be fun but there's no way I'd be able to sit down for a full hour playing one of them.

Super Mario Bros is the oldest game I have played for an extended amount of time in one session.