Cool game! Got lost in level 2, found the secret area but not where I was meant to go, oops! I think focusing on polish than content would be nice, especially for game jams, but the level design is nice! (even if some sections are unclear). I personally don't like the lives mechanic, just makes it a bit frustrating especially since they are shared between levels. I experienced a bug where reading sign whilst moving doesn't stop your, making you walk off the edge and lose all your lives (oops again) I really like the level select area, very smart to tie everything together. (also cool how the pollution so bad they even got smoke underwater!)