Good job! The idea is not the most original but it is done very well. Music and sfx worked well together. There are a few things that would make it a bit of a smoother experience, such as:
- No slippy player movement? Makes one block platforming weird. Also no qol features like jump buffering and coyote time.
- Play an animation when another copy is spawning, so that it doesn't just appear and kill you instantly
A lot of the time it felt less about planning your route and more about platforming though. The difficulty scaling was also really tough.