Honestly, I didn't see what was so appealing about this. I think its weakest part was how you weren't able to do much with the upgrades. They seemed to mostly just fire in random directions. The graphics didn't come off as too appealing either. I was weirded out by how there were no colors. It just came off as shoddy.
I guess there's really nothing that bad about the game. The sound effects are nice. You would be surprised at how some of those blasts can catch you off guard. You seem like you could make this a lot better. I guess the monochrome title covers the lack of color.
Really nice game. The only thing missing is a pause button. Other than that,this shooter rocks!
I like it
It's good but im on lvl 21 and my weapon is maxed out. You need to add more upgrades to encourage the players to keep playing.
okay not bad
just to tell you not a bad game but needs cheaper weapons and i have seen a bullet come from the bottem of the screen so i cant give it a 8/10 so your getting a 6/10 oh one last thing the ship you play as moves normal speed but the enymys move like twice as fast so you have to be very very careful
solution to your "no diagonal movement" problem
you can change the shoot-key to be CTRL, rather space. this doesn't conflict with the arrow keys.
overall, I must say that the game felt very basic. none of the weapons had any personality to speak of, AI drones had virtually no AI... I can overlook the gray-scale, but if you're going to use that color scheme, there should be some critical reason for doing so.