Very interesting concept. It was confusing at first, but after a while it gets intuitive. Using the momentum when the charge is set to neutral helped me get past a lot of the obstacles. Also nice touch on the final level with the alternative goal :)

WOW! I really, really like this. Solving mazes with changing magnetic polarity is a really cool concept. I got a lot of portal vibes from the 'resetting' seeming to carry over the velocity of the player chip. Really cool, real smooth. Solid work here! :D