I was tempted to buy this from GMG the past couple days (~$15), but I figure it couldn't hurt to wait. I'm worried that the game will be incredibly short, and/or so frustratingly hard that I don't want to play it.
But now I'm kind of wishing I'd just bought it.
the music fits the game really good.
Apparently it was originally just a boss rush. But they decided to expand it at one point.So far most of the game has been boss battle after boss battle, that is the stage is a boss fight and only a boss fight. It seems like for every three bosses there is one side scroller level with a mini boss at some point in it.