In String Theory, you must solve puzzles by manipulating the level itself. Bring the circle to the end, and help him explore the weird dimension he ended up in!
Strings (lines) can be manipulated by clicking and dragging. Bring the colored circle to the end (dark circle) to finish the puzzle.
Some lines are breakable if hit with enough force.
If the level has two exits, both shapes need to enter their respective ends (square ? square exit)