A small screened, but fun space based shoot 'em up. With three types of ships.
In this shooter, from Japan, set in space... you pilot a lone ship hell bent on going "upward" despite the fact that thousands of other shooting people in ships object to you doing so.
And lo, that is the premise of this game. It gets more complex when you factor in the bombs and star upgrades, but if you don't, then its simple. Detailed in the helpfully provided English readme is a good explanation of everything customizable here.
There are four difficulty modes (from Easy to God) and there are special bonuses for collecting stars. These increase your "rate" which is basically a score multiplier.
The game is quick and frantic and the boss levels, genuinely tough to knuckle through and get a stack of hitpoints in. I would have personally liked more screen size options - though the 640*480 mode made me laugh - but apart from that, it's good, solid if not very deep, entertainment.