object passes through floor

I have a simple square to walk on and a sphere as my “character” but when i run the game my sphere falls through the floor

Do you have mesh colliders set on the character or the square area you mentioned. I believe that you don’t have these set.,

did you make sure that your character is completely above the ground because I am new to this and I had the exact same problem and it turned out I wasn’t putting it all the way above the terrain so if you place your character in the air then let gravity bring you down then you should land on the terrain and not have a problem.

yeaa i tried that. just started an entirely new one and didn’t have the bootcamp stuff and did all the same things and it worked. i guess there was something with the bootcamp demo that was tweaking it. idk but thanks for answering