Cleaning the Mind

Your head's messy! Throw your thoughts (represented by cubes) out of your mind's windows. But maybe you can do something else with them?

Controls:
WASD and Mouse - Move and Look
Shift - Run
Left Click - Pick Up\Drop a Thought
Right Click - Throw a Picked Up Thought

Q\E - Breathe In\Out (while holding a Thought)

Unfinished; there's no end. Ran out of time.