Overblood is a 3D action-adventure video game developed by Riverhillsoft and released in 1997 for the PlayStation console. The game takes place in the future, where the player takes on the role of a man named Raz Karcy who wakes up in a cryogenic pod with no memory of who he is or how he got there. As Raz, the player must explore the futuristic environments, solve puzzles, and fight enemies in order to uncover his past and the secrets of the facility he finds himself in. The game features a mix of third-person exploration and combat, and also includes survival elements such as managing hunger and oxygen levels. Despite its initial commercial failure, Overblood has gained a cult following over the years for its unique gameplay and intriguing story.

Overblood is set in the year 2115 and follows the story of Raz Karcy, a man who awakens from cryogenic sleep with no memory of who he is or how he got there. Raz finds himself in a seemingly abandoned research facility called Genoq, and must explore the facility to uncover his past and the secrets of the facility.

As Raz explores the facility, he discovers that Genoq was involved in illegal genetic experimentation and that its staff had been killed by a biological weapon. He also finds out that he was a part of the experiment and that his blood contains the key to the cure for the deadly virus that wiped out the staff.

With the help of a robotic dog named Pipo, Raz must solve puzzles, fight enemies, and survive the harsh conditions of the facility to discover his true identity and save himself and any survivors from the virus.

As he progresses through the game, Raz discovers that he is not alone in the facility and that other survivors are trying to escape as well. Together, they must work to uncover the truth behind Genoq and prevent the virus from spreading beyond the facility.

Overall, Overblood is a unique blend of survival horror, action, and puzzle-solving that tells a story of identity, betrayal, and redemption in a futuristic, dystopian world.