Overall a pretty good game! It wasn't really magnet themed, but the gameplay was fun.
In some cases the A&D controls were a bit confusing since they were sometimes reversed. Maybe it would be better without any additional horizontal controls?
The graphics are minimalistic but I think that fits it pretty well, though I wasn't exactly sure what the bullets were in the beginning and they were pretty hard to keep track of. The gameplay was good but got pretty repetitive, maybe things like power ups/upgrades and an online leaderboard could make it more interesting. The sound and music was pretty good, I liked the winding up effect at the beginning. The multipliers were a bit too easy to get, even while missing multiple times you'd still have enough time to maintain it , and so you would only really see your score in the small text under the actual score.
Good job! :D