Klax On GB is one of those Game Boy puzzlers that looks simple at first—just catch falling colored tiles and line them up—but before long, you're frantically sliding rows left and right while the speed ramps up. It's got that perfect "one more try" energy where you swear you'll do better next round, even when the tiles start coming down way too fast.

The sound effects are pure nostalgia, from the satisfying plink of a matched row to that frantic warning beep when things get messy. I always end up tilting my Game Boy like it'll help, even though it absolutely doesn't. If you dig Tetris but want something with a little more chaos, this one's a great time-waster for bus rides or waiting rooms.

Just don't blame me when you realize you've been muttering "Klax!" under your breath for an hour.