Click Items To Clone Them And Drag Them To Make A Level. Use The Arrow Keys To Move And Down To Crouch And Up To Stop Crouching. Space To Jump And Click On Cube To Go Back To Spawn. Use 1, 2, 3, and 4 to change themes. Press R to Reset.
In 2.0, you can place infinity of each block and when you hit the green flag it doesn't reset! I also removed the broken slopes! And, the best change, you can't walk through blocks anymore!