ummm...

try adding some music as a background....nice job though....

not bad

good game. good inprovments. still can cheat :P just hit alt and freezes the game able to move around and then hit alt again and unfreeze. anyway. not bad.

What Corky52 said

my main problem with this one is that it gets very hard, and never ends.
whoo!

Your generic avoid game.

~ Bugs ~

I think there was just one and perhaps it's not so much of a bug, but just something that I really didn't like at all. When an "enemy" would first appear they would show up randomly on the screen for a split second. Then they would appear normally by coming off of the screen and then onto it. I don't know if it was suppose to be like that or not, but to me it looks like a glitch.

~ Animation/Graphics ~

Hit detection was on pretty good. No complaints from me there at all. The "enemies" were well drawn and everything. Perhaps a nice background would have added to the submission. Perhaps you could have even made a really trippy background to try and mess with people's eyes while they played so it would be a tad bit harder.

~ Story/Content ~

Here are some things that I think you could have done to make it better. (Note that I know you are a beginner, but these are things you can start working towards in the future)

Levels - I rather see a game like this with levels so you have a certain amount of points you need to gather before the level is over and you can go to the next level.

Upgrades - Both in between levels and during levels would be nice. You could have things such as:

1) Shields - Where you can take a couple of hits from the enemy before you can die. You can have these to buy between levels in a store and/or have random ones pop up during the game.

2) Invisibility - Make it so this only lasts for a certain amount of time, but while it's lasting the circles that follow you will just stop for awhile. Have this primarily pop up randomly during the level.

3) Slow Down - This can make it so the circles are slow for a small amount of time. Only have something like this during the level.

4) Invisibility - Make it so that for a short amount of time no matter what you run into you won't die.

Money system - Of course with a store you would have some sort of money system. This could be done by having random "money" pop up during the level that you could collect if you passed over it.

Just a few ideas.

~ Audio ~

This part is plain and simple. :P You just need a nice catchy song and along with it an option so people can mute it if they want to or not. That's really all that is needed, but if you wanted to do a little more you could add some audio when you get hit by an enemy, which represents dying.

~ Overall ~

Just so generic, but your a beginner so keep it up. I know you don't want harsh ratings, but don't look at the ratings as much as you do the helpfulness of a review.

Dude

This concept has been littering the Portal. I've seen this at least once a week. Congratulations for learning Flash or whatever, but come on!