The Gamebryo engine is a 3D computer game engine based on the NetImmerse engine. It is a direct renaming of NetImmerse in 2003. Currently it is owned by Gamebase Co., Ltd. (Korea). Titles such as The Elder Scrolls IV: Oblivion (2006) and Fallout 3 (2008) are based on it.
A direct descendant of Gamebryo is the Creation engine, an advancement released by Bethesda Game Studios in November 2011.