Ever wondered what Sonic 1 would feel like if someone remixed the whole thing? South Island Adventure is exactly that—a full-on hack that shuffles the zones, tweaks the physics, and throws in some surprises. You still recognize Green Hill, but the loops feel different, and suddenly you're bouncing off weirdly placed springs you don't remember.

First time I played, I got stuck in Marble Zone way earlier than expected because the level order's scrambled. Some of the jumps are just slightly off from muscle memory, which keeps you on your toes. Not gonna lie, it's a little janky in spots, but that's part of the charm—like playing Sonic through a funhouse mirror.

If you've burned through the original too many times, this messes with your head in the best way. Just don't trust any of the old shortcuts.