Story. Overblood is a sci-fi action horror game. You are Raz Karcy, a Russian scientist who wakes up from deep sleep with amnesia. Something went wrong in the facility and your sleep was luckily interrupted. "Luckily" because if things had gone smoothly, you would've been asleep forever...
Controls. The world is 3-D and you have the option to toggle between three viewpoints. There's a first person view, a third person shoulder view, and a third person cinematic view (which changes from point to point). You also can have a tagalong sidekick, either a friendly droid named Peepo or another human character. You can switch between characters at the push of a button. The controls are a little choppy, but they don't get in the way of enjoying the game.
Mood. Except for Peepo and the woman you find later in the game, you are basically alone in an abandoned underground research facility. Your challenge is to get to the surface. But that won't be easy since the thing that disrupted your cryogenic sleep also took out the facility's power. From time to time, infected mutants appear to kill you. But for the most part, you're on your lonesome.
Puzzles. Just right. You don't need a guide to beat Overblood.
Graphics. Not great but not terrible.
Music. There are a few memorable tracks.
SFX. The "cancel" sound effect in the menu and field is pretty...well, you won't forget it since you'll hear it a billion times.
Endings. Surprisingly great. You can kind of guess the ending as you get close to the end, but it was still really good.
More. Overblood is not hard to find or expensive. It's not a game everyone will enjoy since you don't just go around fucking zombies up. But it's still fun. Plus Peepo was a badass.