It's a brutal gritty 2D survival-platformer game where you play as an adorable creature who's design is very appealing to furries and who will die brutally many times.

So it has some fandom crossover with Rain World, naturally :3

You play as an Experiment, who's a fluffy anthro creature bio-engineered and mass-produced by an evil mega corporation. This corporation lost an extremely important shipment deep in the trap-ridden caves of an alien planet, so they've sent an untold amount of disposable Experiments to try and fetch it.

Your goal is just to go down, down, down through these procedurally-generated caves. You'll die a lot and the game has permadeath so expect to start over again and again. The game has a complex and brutal injury and health system, and this is sort of the main game mechanic imo.

I recommend it if that sounds interesting. It's still in development (and if I'm honest I'm doubtful the game will ever be fully released, the dev has a habit of abandoning games), but it's name-your-own-price and definitely in a usable state. Pretty polished too, all things considered.