It's kind of a JRPG/Platformer hybrid with metroidvania elements.
You control a coffee machine on an outpost on a distant planet that's inhabited by 4 large robots that are supposed to run simulations and figure out ways for colonizing the planet, but a virus is interfering with the project and it's your task to enter each robot's simulation and defeat the virus.
The game is split in two sections: Day and night.
The main part happens during the day. Here you enter the simulations, which are the platforner/metroidvania segments. You jump around, shoot enemies and collect stuff. You can also enter system panels to close security holes the virus may use. The game then switches to a zelda-ish style with topdown view and each screen representing a room with enemies in it.
Throughout all this you collect system resources you can spend on various upgrades.
During the night you just go outside the base, walk around the barren surface of the planet and collect items that you can give to the robots which will increase their levels.
All that leads up to the battles against the virus, which are semi-turn based battles akin to common JRPGS, but the battle system also has it's own unique twists and turns. These battles are the center of the gameplay, as nearly everything you do is to prepare for them. They can get a bit frustrating towards the end because of some pretty nasty enemy abilities, but overall they are fun and challenging and I didn't need to do any grinding to get through them (not counting the night segments, which are basically just that... plus a little bonus :P)
The art and music are amazing, and I really enjoyed the story. The gameplay is fluent, but in itself nothing too special. Basic platforming for the most part, but the JRPG battles really stick out though.
The only other thing worth mentioning might be that the game is relatively short. I got through it in 6 hours. I *might* do a second run to get those 200% (only had 168% this time), but there doesn't seem to be any major replayability. So if you want something epic, don't look here. If you want a really nice, atmospheric and uniqe sci-fi short story, get this.