The art is cute (especially the frog) and mechanics seem solid so far. Here are a few suggestions:

- For just the first level, it seems a bit hard because Lava rises very quickly before you've had time to get used to the game. Also, many paths look like they should be jumpable but turn out not to be (not sure if these are designed to be traps); this may lead to some player frustration. It's one thing if my lack of skills/timing made me fail, but if a platform looks like it's reachable but turns out to be just slightly out of reach, that could confuse players. Also some tiles/platforms look like they should have different functions but don't. For example, about mid-way up, the tiles on the right look like they might be springs or something to help me jump higher. I went there and it ended up just blocking me.
- I'm not sure what the cookies do? It seems that I can beat the game without collecting all of them (haven't tried doing it without collecting a single cookie to see what would happen). Also, some cookies seem impossible to get (at least in single player mode).

Fun game. You could try to generate levels procedurally, gradually increasing difficulty.

Great concept, and a product i can see could become a smash hit, the only issue I had was that WASD didnt work for me :)

Very good concept and I think it could really become a great game, main issue I'm having is that many paths are dead ends, which is fine on its own - but combined with the fast lava rising speed it just means game over due to decisions I had no way of knowing beforehand were wrong.

There were also no sound effects/music, but I'll chalk that up to the web build maybe not playing sound