Polarity Switch is a puzzle game similar to Sokoban where you move objects to certain points in the level. In this game, you repel objects with the same symbol and attract ones with the opposite symbol (+ and -). In later levels, your polarity can change and also the way that you move things.
Controls
Move: WASD or Arrow Keys
Undo: Z or U
Reset: R
Back: Esc or B
Update 1
Adjusted level 11.