Ever played Super Mario World so much you could speedrun it blindfolded? Training Days is a romhack that cranks up the challenge—new levels, tougher enemies, and some seriously devious platforming. The first few stages trick you into thinking it's just a reskin, but then you hit the first castle and realize Yoshi's not gonna carry you this time.

Some of the jumps feel borderline unfair at first, but once you get the rhythm down, pulling off a perfect run is stupidly satisfying. Also, whoever redesigned Bowser's fights deserves a medal—or maybe a slap, depending on how many times he's wrecked you.

If vanilla SMW feels like a warm hug, this is the game kicking your chair out from under you. In a good way.