interesting. played stuff on similar concept before. not as a shmup though. game's a little slow for me, but i guess that makes it easier for more casual players. swarm from all sides off-screen is a little dry as a mechanic too, but i guess since it's a quick game, it's not exactly condemnable. warning: music sounds cool at first, but gets really grating after a couple minutes. it's the low end.
overall, i guess for a Ludum Dare compo it passes inspection, but it's not exactly sale-able, if you know what i mean. fun for a little diversion anyway. hoping you make the right choices, that is. feel sorry for the Cap though. maybe he'll get lucky though and there's a cryo-freeze function or something he can use: okay, so it both worked and didn't work great on the Narcissus, but that's cuz Ridley's got #$&% for luck.
ftr, game freezes right after game start in IE.