It's a horror survival game where players avoid doctors and rats, as well as solve a few puzzles. There are two modes, with easy mode and normal mode. I must admit, I first played easy mode, then jumped to normal after an hour or so. Easy was well... easy, with the rats and doctor easy to avoid. Normal is a bit more challenging and some parts actually had my heart racing as I have been caught in normal a few times already.
Players can only use one item at a time, so if there is an important drop, the player must drop the current item he/she is holding and pick up that new item. This mechanic makes the game a lot more challenging.
As for the graphics, they look good for a mobile game, but not the best. A bit more optimization on that part. As to why this game gets three stars, it's because of the ads. In Easy mode, they pop up every few minutes or so. It's the same with normal mode, and it gets quite annoying at times.
However, overall, not a bad horror game. It's no RE8 or Alien Isolation, but it's pretty decent.