Raiders is a cancelled project in the Tomb Raider series, that would have been developed for Playstation 3, Xbox 360 and PC as a coop multiplayer spin-off, before Crystal Dynamics decided to instead working on Lara Croft and the Guardian of Light. Raiders’ concept was heavily different from The Guardian of Light, as it would have been much more similar to the original Tomb Raider games, with third person exploration, platforming and shooting combat.
The story focused on the clones of Lara Croft, known as the Doppelgangers. It’s currently unclear if players would use these Doppelgangers as their playable characters, or if they were the main enemies. In the end the game was canned in pre-production, when they just had some concept made with placeholder graphic and some gameplay ideas to pitch to the studio managers.
While the game was never announced by Eidos nor Crystal Dynamics, fans of the series found documents of the project online, preserving its existence from being forgotten.