A stealth game is a type of video game in which the player primarily uses stealth to avoid or overcome opponents. Games in the genre typically allow the player to remain undetected by hiding, sneaking, or using disguises. Some games allow the player to choose between a stealthy approach or directly attacking antagonists, but rewarding the player for greater use of stealth. The genre has employed espionage, counter-terrorism, and rogue themes, with protagonists that are special forces operatives, special agents, secret agents, thieves, ninjas, or assassins. Some games have also combined stealth elements with other genres, such as first-person shooters and also platformers.
Tom Clancy's Splinter Cell (2002) featured a light-based visibility meter which determined how much the player was visible.
Metal Gear Solid 3: Snake Eater (2004) introduced camouflage to the stealth genre as can be seen with the "camo index" in the top-right corner.
Castle Wolfenstein is a 1981 action-adventure game developed by Silas Warner for the Apple II and published by Muse Software in 1981. It is one of the earliest games based on stealth mechanics. A port to Atari 8-bit computers was released in 1982, followed by Commodore 64 (1983) and MS-DOS (1984).
Cover art by John Benson