Absolutely great game! I love puzzle platformers like this. The replication mechanic is very fun. At first, I thought it might be a little too simple, but I genuinely surprised by it. By Level 4 I was using it to solve the puzzles, but I found that if I have extra replication, I might use one as a pseudo checkpoint. I started seeing new opportunities to use it and I really like that.
For feedback, I think the control scheme is a little funky. Sometimes in platforms, w is a jump key, and when I am using space and w back in forth my tiny brain stops functioning and I accidentally jump when I want to replicate and vice versa. I would honestly prefer it on like r or f. I know r is used already but maybe that could be swapped to a key slightly farther away so avoid accidental hits. I didn't accidentally hit but I bet someone will, so maybe two birds with one stone? Also if you have the chance to add more levels, a more drawn-out introduction would be nice. Introducing one concept at a time. It might seem a little slow, but I think it will help streamline the experience. If there is less to experiment within the very first level, it feels like the player is making progress while still learning the game. It took me a while to do level one but that is just because I was experimenting a lot.
I had so much fun playing this. Thank you for a great submission!