Rebellion (Derby) Ltd

Core Design was a British video game development studio based in the city of Derby. It was founded in 1988 by Jeremy Heath-Smith and several former employees of Gremlin Graphics.

At the end of 1994, Core was acquired by the CentreGold group, comprising the publisher U.S. Gold and distributor Centresoft. CentreGold agreed however, that Core should be left alone to operate autonomously. The studio was acquired by Eidos in 1996.

The studio's first game was Rick Dangerous (1989). Core Design was most known for developing the Tomb Raider games until Eidos moved the development of further installments to Crystal Dynamics in 2003. Most key members of Core left the studio shortly thereafter. While Core Design developed its own version of Tomb Raider: Anniversary, the Crystal Dynamics version was published instead.

On 11 May 2006, it was announced that Core's assets and staff were sold to independent development group Rebellion, but Eidos would retain the rights to the name and games - hence, the studio was renamed to Rebellion Derby.

On 17 March 2010, the studio was closed.