This is definitely a fun game. I would only say I wish there was audio and some music that could definitely hype the player up and stuff. I found it wasn't chaotic enough to me. I couldn't notice the increase in distance moved, and the rising lava was cool but not too chaotic as its only one thing to have to pay attention to. I still thought it was fun and enjoyed playing it!
Also for some reason I spawned in upside down initially, but all I had to do was die and it was fixed. I also opened the page again and didn't have this problem