Love it! Keep it up its very fun ;)

The game could definitely be more difficult such as making the screen move progressively faster over time otherwise you could pretty much like this game indefinitely. I do like the various actions by the circles though. A mix of brighter colors would be nice to see as well.

Very pretty. Decent fun to play all round, I just have a few minor issues:

1) The colours. While I like the idea of randomizing all the colours and having a shifting background, the end result looked kind of...ugly. And it was inconvenient when the ship was the same colour as the background and I had to guess where it was. The bits with a black background still looked amazing though, maybe make the whole game like that? Or different shades of grey, if you want to keep a colour-shifting thing going on.

2) Controls. Not any problem with using them, it's a pretty cool system actually. But please tell us what the controls for your game are! Make it easy for people to play your game. Come to think of it, I'm not sure I knew all the controls...was there more than just the arrow keys?

3) More stuff. Especially some kind of endgame, or a reason to collect circles other than to see how many you can get, or some kind of enemy or similar that can make us lose the game. Changing the direction of movement occasionally would make the game much more interesting, I think, and you have a control system perfectly suited to such changes. Also (this is possibly just me being greedy), any chance we can see after losing the game what we travelled over? I wanna see all the crazy looping and stuff I did =D.

Like I said at the start, I really liked this game. I can see a lot of potential for amazing things to happen with it too.

Seems like it could be good, but there is no satisfaction to getting circles, and the controls are fairly sluggish.

Cool game, and beautiful images (the music worked well with it too). I would have liked some sort of purpose, though; collecting the circles is fine but since they never got harder to get (they actually got easier) and since the 'picture' never moved faster the only way you could die was when you got bored of collecting circles and started trying to draw things with you're trail. If you wanted to make this just an art game then maybe a more free-form world would have been more suitable (so you could do more interesting things with that cool trail you left) and if you wanted to make it a little more absorbing of a game maybe some sort of upgrade system (even just a trail-image upgrade, or a ship-image upgrade, or something artsy) where the currency was circles would have been nice.

A good, simple game even as it is, though.