Ground Objects are objects that are only placable into the ground. They are usually pits or pools of water.

Glitch[]

A glitch can occur in Remix. Sometimes when you tap and drag any pit or pool of choice, you are able to move it from its spot, and it leaves a square hole (if you delete it) making everything in the pit/pool fall through the ground and allowing you to go underground, even through hard terrain like stone. If you give Maxwell wings and try to fly back to the surface, once you hit the surface most often you'll be stuck down there and unable to pass the surface; however, sometimes Maxwell will go to the surface instantly, as if nothing happened. The hole is still there and you can go to the underground as many times as you'd like until you restart the level.