Pnorar is a simple bullethell-like topdown spaceshooter with randomly generated upgrades.
This is really nice classic action with some twists. For one it's rather hard. But once you get used to the mechanics it gets easier. You learn new tricks and get to know the enemies better (which are a little bland though). The controls are nice and you can set them up in the menu whichever way you like, too. Many games don't have this (important!) feature anymore unfortunately.
Anyway; if you like simple shoot'em'ups, and don't care too much about fancy graphics, you'll probably like this.
Also it hasn't been mentioned anywhere that this has a cute little story. Haven't seen all of it yet though. That damn ice-part always gets me.