This game reminded me of an old DOS game that is escaping me, game play and graphics felt right and kept my interest for a bit.
I only have one complaint with this game the level ending sound is much louder than the other sound effects and caught me off guard.
Really not bad for a 12h game!
Interesting idea, but the game is still "only" a platform-game with something different. I would have preferred something different that is played like a platform-game. Did I lose you?
I would have liked a more strategic aspect. Right now the game is just : rush to get the box then the Apothekium and then the exit. I would have preferred a game where you have to avoid the radiations, scare the animals so they don't get radiations, then grab the box or don't if you don't have time and prefer to use that time to distract the animals... I don't know, I felt the game could have been less main-stream.
There are some display problems when the animals have mutated (or it's normal?), but the graphics are more than okay. They are sound effects, but they are unbalanced and there is no music, so I don't really know what to say.
I hope you'll have more time for your next Jam, seeing what you did in 12h makes me expect a lot for a full 72h!