Well I saw this, and decided to give it a shot. My reaction was kinda sub-par. I can definitely tell a lot of effort was put into this, and it shows, but the game play was rather difficult at times, it seemed rings were too short of supply, and really, just things moved so slow I actually got bored. The concept was quite good, and I tried a 2 player match. It was okay, but I didn't get much of a different feel from regular match. Bomb rings I feel are really under-powered. While all you have to do is run into someone to hurt them, since I'm moving so slow, it is difficult to do so. Not to mention that every time I they hit a wall they automatically blow up. This really makes them hard to use with any strategy. Homing ring didn't change. Auto ring was kinda neat, but really puts people at a disadvantage due to it's short range.
All in all, it is a very nice concept, but I just think it needs improvement. Also, excellent choice of music for the boss.