https://mush101.itch.io/demon-castle

An evil sorcerer is trying to summon an ancient demon into the world. You are the only one who can travel to the sorcerer’s castle and prevent him from completing the summoning. Best of luck.

So, is it possible to write Castlevania III: Dracula's Curse in PICO-8?

... well, the answer is no, but this is a darn good attempt.

In Demon Castle, you're armed with a whip (no subweapons), and proceed through the mazelike approach to the castle. After fighting your way through each section you select a new route, each of which leads to different kinds of challenges.

Most of the enemies aren't too tough; even the bosses are manageable if you understand how all of the game systems work. The final boss, though ... just how carefully have you explored the paths to the castle? Have you tried different ones? Have you searched for secret passages? Maybe you'd better ... theoretically you can beat the game following any combination of routes, but the challenges vary a great deal.

Demon Castle is a nice Castlevania-like showing some serious PICO-8 programming chops and some real replayability as you try to learn enough about it to be able to take down that final boss.

Play in browser.