Flappy Bird on Game Boy is one of those games that looks stupidly simple until you actually try it. You tap a button to keep this little pixel bird airborne, dodging pipes that come out of nowhere. Sounds easy, right? Nope. After about three seconds, you’ll realize how brutally precise your timing needs to be—one mistimed tap and your bird nosedives into the ground or smacks straight into a pipe.

The graphics are pure old-school charm, but don’t let that fool you. This thing is a reflex gauntlet. I swear, the first time I hit double digits on my score, I nearly threw my Game Boy across the room in celebration. It’s the kind of game where you keep telling yourself “just one more try” until you realize an hour’s gone by.

If you’ve got a soft spot for punishingly simple games or just want to relive the rage-inducing magic, this is the perfect time-waster. Good luck not getting obsessed.