The lack of contrast between walls and floor made navigating a bit difficult. Nice idea with the random element - I think with a bit of polish this could be pretty interesting.

Neat particle effect! I included it in my video compilation series of Ludum Dare games, if you’d like to check them out :) https://youtu.be/1ovNEwCi_RI

I liked the mechanic, though I personally would have liked the ability to control the shapeshift, or some timer letting me know how long I have. Also, the game ran very fast for me, probably faster than intended, I believe you might be using Unity's Update() function instead of FixedUpdate(), which I think could be the cause of this. Also, I agree with Conor when he says that the contrast could be better between the floors and walls. Visually, lighter colors tend to "pop" out more, so I might recommend making the floor darker. Shadows might also be helpful.

Nice mechanics, good job for 12 hours.