I'm glad of seeing a bullet-hell on LD! Wave 12 on normal turned out to be too difficult haha. Made 30276. Enjoyed, but i don`t see the evolution theme here.

Yeah!
Bullet-hell ftw!

Good playability with snappy controls and movement. Played a few rounds, but felt that there was some sense of progress lacking to keep me playing.

Thanks for the comments!
For those who are finding the game doesn't go anywhere:
You're probably exterminating all the aliens, so they end up not evolving. Please try hard mode.

Oh, also the source is downloadable from the same page as the game. Look for the zip file at the bottom.

I like the way this is done. Didn't get the evolution thing, though.

Nicely implemented. Not my kind of games but everything playied smoothly!

I think the controls are very crisp. The game certainly feels solid. However, I agree with others that the game does not really feel like it progresses, or that I progress. And it seems that the player is punished when they perform poorly, which seems counter intuitive to the concept of flow and keeping the player engaged.

Okay, maybe I'm missing something here.
Are people feeling that the game doesn't progress...
(1) because they are not successful enough, viz. they die before the aliens evolve significantly?
Or (2) because they are too successful at killing the aliens, so they don't evolve at all?
Because the game is made in such a way that the alien race only gets stronger by evolving, and they only evolve if some of them survive. If you kill all the aliens on level 8, for instance, none of them will pass on their evolved genes, and the whole lot will start again from the basic genome when you hit level 9. There is no artificial system in place that forces a level 9 alien to be stronger than a level 8 one.

Pjchardt: Yes, there is a certain degree of positive feedback. I think this is inherent to any system where the enemies evolve. As you may have noticed, I put in a counter-system which avoids punishing the player excessively for dying, by giving the player a full stock of lives at the start of each wave.

I meant to comment about 2 separate characteristics of the game, but re-reading my comment I can see how that is not clear at all :) My first comment is that I felt like I was not progressing because I just kept fighting wave after wave. Because I usually eliminated all of the aliens, there did not seem much of a difference between waves, so I felt like I was in a loop. As for my comment about player punishment, it was more a musing than anything else. On a conceptual level it seems that making stronger enemies when a player performs sub par will only frustrate the player, in practice I don't really know, never tested it. Sorry for the confusion. All that being said, I think you have a really nice shooter coded in 48 hours.

had a some major lag at times but great game.