Hidden gem, easy and short to complete but hard to 100%(unless you want to malding which i don't)
The story has similarities to Mass Effect 2, involving an alien machine and biological alterations that transform human into becoming one of them.

Gameplay itself offers a variety of angles and became a bullet hell if you play on hard difficulty, so try this if you wants a short danmaku(shoot' em up) game and wait for a sale since it's only a buck.