Its a puzzle game, and not a very good one at that. You have a handful of sizes, each with like 2 abilities. And its usually very obvious when to use which, based on a 'Deposit Biomass' checkpoint in the room before.
And the guards with the shields bring the game to a screeching halt. What's ZP call it? A game of grandmother's footsteps? That. And boy howdy do I not love the flame throwers that are basically an instant kill, but they force you to watch it. And then we have drones and assault mechs out of nowhere.
And there's no map! You get lost often 'cause you don't remember what little side room needed the tentacle mind control power to get to three level ago, which is the way to unlock the gates leading to the door of the 5th level.
Its a cute little demo game, sure, but I would say it feels like a programmer's schoolwork project rather than a finished game.