Controls are not solid at all, need work.

Good idea, but the execution wasnt perfect. The game is almost impossible, I couldnt even get past the first level (supposing there were levels)
with some work though, this could be turned into a great game. I also really loved the minnimalistic graphical style :D

Really loud! The controls seemed to have issues. Fun game.

Great job, worked great on OSX.

Works fine on my mac, too (yay Java). I like the style and the sounds a lot, but I didn't feel like I had enough control over the gameplay. It actually gets more fun once you lose a bunch of ships and you have some more fine-grained control.

It took me a few round sto realize that "s" is a toggle--I kept pausing, then hitting w/d to resume moving and nothing would happen.

Simple concept, good implementation.

Controls are pretty weird and the game doesn't really end? Kinda nice music and glow effect, though.

Pretty fun, could've done with a little more work on the gameplay as I felt like I was losing because of buggy controls rather than player skill. Sweet effort for 48hrs though, well done!

Interesting idea

I found myself just using the Pause key (since the shifting left/right was too complicated for me). I was able to beat it. It's a very interesting concept and could make a decent one-tap mobile game if you get rid of the A/D controls.

Yeah I'm working on a post compo version where you just use the pause key and then up/down increase/ decrease your speed. I was only using the pause key when I was making it so I didn't really notice the control issues with left/right.

lol not sure about releasing this on mobile I'd probably get sued into oblivion by the space invader owners :D. I'd love to do that though. I'm using libgdx so it'd be super easy to port to android!

I think this one is, although pretty hard a good entry. Great work ;)

need a little smoothing (progression controls ) :)

I enjoyed that! The controls were confusing an limiting but also challenging and fun!

Great game! Nice graphics, nice sound, nice music, nice game play!. I loved it. The controls need some polish, when you type S and then A or D, the enemies keep frozen. That shouldn't happen. It was hard but I could win the game.

Yeah baby, make it rain Pew Pews! A mortal game of "red light green light"

I loved this game! The visuals of the enemy and player ships were spot on, the music, sound effects and particles were also great. This was a great take on the "reverse-x" game.

Some thoughts:
- I think the game was a bit on the easy side, while it was fun, maybe you could have ramped the difficulty a bit. After about 10 levels or so, I had to sacrifice myself to die. Maybe make lasers faster over time, or jack up the shooting frequency of the enemy.

- Some score would have done WONDERS for this game. Give some points for every enemy shipped killed, plus bonus points at the end of the stage for time/surviving ships. Then a high score screen: BAM! Replayability!

- If we always want to shoot all the time, why do we have to mash spacebar? Maybe you could have a lower rate of fire if the player held the space bar, and then he could fire a bit faster if he wanted to mash it.

- Now I know I said the game was a bit on the easy side, but it would have been great, for the sake of nostalgia, if we could blow up the defensive walls. Not sure how to balance that - maybe the walls get stronger over levels?

Thanks for the awesome game!

Controls are really hard to get to grips with, but I did enjoy the presentation and music! :D

Somehow managed to win. My lasers stopped working near the end. Not sure if this was due to ammo limit or if it was a bug. You are already aware of control issues. Graphics and sound really help the feel of the game.

It's all about hammering down spacbar, and my spacebar broke when was working at my game, so it was a bit too difficult for me. Bu good grapics and overall mood, but too short.

Excellent graphics and audio! Nicely executed, with satisfactory invader mechanics, and works well enough; but extra work on this idea could make it pure gold!

I grokked the controls at some point but they are group-based and they get confused when the alien groups move to the next line.

Few bugs here and there. I got two player ships at some point and to win I can let my numbers reduce to 1 or 2 on the same column and then keep going right to force them to move down all the time above a shielded area and win.

Confused me at first as I was trying to control the spaceship (force of habit). Visual style looks nice with the pixelated bloom effect to simulate old CRTs. Good sfx and music.

Very well executed. And once you forget about moving left/right and use only <s> and <space> the controls are not so bad after all ;)

Fantastic game top mark for fun despite the controls :)
The S Key is enough for move, maybe that holding it for pause would be even more intuitive.
For the firerate I think that you should slow it a bit because the earthling IA can't handle well a bunch of bullets comming at his face. Maybe going back to the old fashion "one bullet per screen" ( one for each invader ).
You also have a bug on the fire emitter, sometime fire is not available some time its only one of your invader that can fire.
For more than one IA, difference in speed or IA parameters should be added so they dont finish stuck together doing the same moves.
And last ( but not the least ) if you want to work again on this game, I think that evolving invaders would be A.W.E.S.O.M.E I would like to buy more invader for my wave or invest in more expensive ones with better firerate or special habilies ^___^
Oh and I undestand the need for unbreakable protections but you should add breakable ones just for satisfy destructive intent of your players :)