Surprisingly addictive. The low-poly models look very good with the color choice, and the soundtrack is great too!
UI is a bit annoying: if you make multiple connections with one line, but then decide to erase one, all connections are erased at once, which in case of shields pretty much means instadeath on higher waves. There also was a second of camera flickering its position when entering the ring while in 3rd person mode (windows exe version).
Overall, this is a very cool game!