Pariah

A sci-fi first-person shooter released in 2005, Pariah places players in the role of Dr. Jack Mason, a medic who crash-lands on a quarantined planet and must protect a mysterious patient from a hostile military force and deadly virus-infected mutants. The game features fast-paced on-foot combat, vehicle sections, and a unique “Weapon Upgrade System” that allows players to permanently enhance their arsenal. It is known for its multiplayer modes and frantic, futuristic firefights.