It is a very cute style and for Spiral Knights they have added just a touch of steampunk. I love the mix of fantasy and steampunk. I'd heard the game play was much like the old Zelda games and I agree with that statement. You hack down bushes to find hearts inside them, you can throw pots and other little things that remind me of the Zelda games.
It's a fun little game with the only downside I see right now is that you can't really play solo. To run through the dungeons you need some party members, so make sure you grab some friends to play with you. I call it a downside because not everyone can make friends that easily or has a horde of gamer friends on standby, but at the same time I think everything is more fun with friends and I probably wouldn't want to play Spiral Knights as much if I had to do it all alone.
When you are making your personal color, it will also be the color of your name that floats over your head in the game, so that players will have a pretty good range of different colored names.
I look forward to playing again, as I had a lot of fun. If you try it and get lost, there is a wiki and forums on the Spiral Knights website to help you out. Never fear Three Rings support, those guys rock and are super nice.
Here's another screen shot that shows the knight using her gun.
