I like the sound to. I loose the first time :-\
Arrow Keys or WASD to roll. Space to jump.
Made over the course of 5 to 6 hours on a Sunday for Learn a Tool or Technique Jam.
You can find the Roll-a-Ball Unity tutorial here
Features I added beyond the tutorial:
- Sound and particle effects for picking up the yellow cubes
- A jump function and a second floor to give it some use