Boulder Dash on NES is one of those classic maze games where you're scrambling underground, digging through dirt to grab diamonds before the clock ticks down. The boulders in the name? Yeah, they'll crush you if you're not careful—learned that the hard way on the first level.

It's simple at first, but then you realize you've got to plan your moves or risk getting trapped by falling rocks. The Japanese version plays just like the original, though I swear the music has a slightly different vibe. If you're into retro puzzle games that don't hold your hand, this one's a solid pick.