Dementium stood out as a rather unique game for the DS when it was released, as it was the first fully 3D, first-person survival horror to be released on that platform. As it turns out, it works surprisingly well.
You start the game knowing very little about what you may encounter. You wake up alone in a dimly lit room within a run-down asylum, with no knowledge of who you are or how you came to be there.
Upon exploring the asylum, you come across various mutants, the result of surgical experiments performed on the hospital's patients. With limited weapons and ammunition scavenged from around the darkened asylum as you explore, the game's atmosphere leaves you feeling claustrophobic and increasingly on edge.
In one of Dementium's more surprising jump scares, you find yourself entering a seemingly empty corridor, only to be confronted with what appear to be FLYING CLOWN HEADS. The stuff of nightmares, right? And just in case the image isn't bad enough, the noise they make is terrifying.