Haha, dude! This is very freakin' awesome. I've never played Bosconian before and that's why I thought this would play like any other traditional vertical/side scrolling shooters from the DOS era like Tyrian and Major Stryker, but this is pretty darn neat. Nicely done.
It's pretty tough lining yourself up to attack something without getting hit, it doesn't help that enemy shots one hit kill you.
You should definitely develop this further with more ships, more lasers and more explosions because awesomeness.
This whole thing got me thinking of attempting something similar of my own, however, I'm going for vertical scrolling shooter gameplay. Hopefully I can put something playable together in a reasonable short time. Attack of the B-Team (Minecraft Modpack) is taking up all my free time at the moment.