A Good Space Shooter, save for one flaw.

This is a good game, and definitely worth playing. It's fun and well made, and it's obvious that a decent amount of work went into it. It's a strange mix of simple flaws and good ideas.

EDIT: This review was written before I realized how absurdly powerful you were in slow-mo. For some reason you can shoot about twice as fast, and using this really makes most of the bosses go from intimidating foes to total pushovers. Bosses should either have more health then or you should fire at a normal rate in slow mo.

Gameplay: This game at first appears to be a standard shooter, only with no powerups or weapons upgrades, and a series of unique boss fights rather than the typical waves of cannon fodder followed by a level ending boss. But your ship has two tricks. First, by holding X you can slowdown all the enemies and bullets while moving at the same speed you always would. The other interesting aspect is that you have recharging energy shields, which are rare in a genre famous for the one hit kill.
The slow motion drains from this bar, so it's only worthwhile for dodging instant kill moves (ie, kamikaze ships / missiles and laser beams rather than bullets.) It's a blast to use the slow mo, so it's a shame there are only a few times where it even helps to use it. This is slightly offset by the fact that when you use it you really need to use it, but I wonder if more could have been done with it.
The modest recharging healthbar, meanwhile best decision I've seen in a shoot 'em up in a while. It allows for crazy bullet hells to be much more accessible to players while still feeling intense and tricky for seasoned shmup vets. The only problem is that it doesn't make it entirely obvious that you've been hit by a bullet. Speaking of seasoned vets, this game won't go easy on you. While this game allows curtain fire to be more accessible, it jumps right into the action with no easy modes or tutorials. It's nothing you shouldn't be able to handle after a few tries if you play a lot of these games, but I must imagine it would be quite difficult for beginners.
The boss fights each have their unique moves, which keeps the game moving along and staying interesting. Most of the bosses change forms throughout the fight, changing the tactics you use. There are only one or two cheap feeling moments, and fortunately one of these is in the very first boss so you just memorize it. When the boss gets down to its geometric core, it starts really upping the ante, so there's a brief period where you go from dodging and fighting to simply trying to destroy the thing before it has time to give you a really bad day, yet it still feels balanced in that if you don't destroy it you can still potentially survive its bullet waves for some time. It's just not recommended
This game is fun and tries to do some somewhat original things. Of course this isn't the first game with time slow, but the fact that you can move at normal speed during these time warps is very fun. The recharging healthbar is certainly more of an evolution than a revolution, but it seemed to fit in with the space shooter quite nicely. The main problem is that the game lasts 7 minutes tops, with no highscores, harder difficulties, different modes, or challenges. I could still see myself playing through it a few more times, but it seems to end rather abruptly. This is ultimately why I couldn't give it 5 stars. It's 5 stars while it lasts, but it just doesn't last long at all. Still worth playing, but probably just in your web browser.

Graphics: The graphics were a neat s retro wireframe style with flashy explosion effects and good looking bullets. The main ship design looked a little bland in comparison, and this style is certainly not the most original, but it still looks good and is well done. There was one boss where the explosions got in the way of visibility, but this was the exception, not the rule.

Music: The music sounded very professional. I'm assuming they're royalty-free tracks the creator purchased as there's no credits. If so they were well chosen tracks that fit the style of the game. The greatest thing about the music is that in slow-mo mode it slowed down too. I don't know how this was achieved (DLLs, I assume) but it makes slow mo that much more entertaining (and tat much more disappointing that you can't use it more.)

Sound Effect: That's not a typo, "effect" should not be plural. Save for music, there is only one sound effect in this game: explode. And it doesn't even happen for some explosions. Needs at least a bullet hit sound, if not bullet fire and boss laser beam sounds. Felt strangely quiet.

Story: You get a few sentences when you beat the game explaining (I think) that you saved the world. More or less the exact same thing I did for my first space shooter, and fortunately nothing more is needed for this sort of game, but it still would be nice to know what's going on before you did it. Still, for a game so short it at least got right to the action.

Interface: There's nothing fancy, but it gets the job done by showing you all the information you need, and not much extraneous. There's no title screen, but the only real interface problem is that there is no pause button and no simple way to restart.