great!

this is a great game!
iv never seen anything like it. so original
maybe you could add some power-ups?

wicked

i loved it, simple controls, bit of fun t'was great. =), i have no experience with making games on flash so i can't really make any helpful suggestions, sorry.

Wow Good Going

I found that it had a very old school appeal to it. The graphics were fun the music loop wasn't too aggravating. And overall the only thing that needed work was the speedup in difficulty. Also adding 'power ups' or 'upgrades' would be a great idea. Keep it up!

P.S. More sound too. Almost forgot that.

Nice but a little hard to... confusing...

It's good, but it took me a while to realise to hit space while an alien was goind through

I like this

It's a simple game, easy to figure out. However, a small explanation (in game) of what exactly to do would perhaps help a lot with it. Overall, though, it's a nice distraction, and rather fun.