Ms.PAC-MAN Pocket Player Pro

It's a full-fledged arcade, but small enough to slip into my jacket pocket. The grip on the side is comfortable even when I'm making a bunch of sharp turns chasing down those power pellets.

The sound effects and that classic 1982 chiptune music are spot on—took me right back to the arcade. The pocket size is perfect for sneaking in a few quick rounds on my commute, and the controls feel surprisingly responsive for such a tiny device.