OpenJK is an open-source project focused on improving and maintaining the Jedi Knight: Jedi Academy (often abbreviated as Jedi Academy or JA) game engine. It provides enhancements and fixes for the original Jedi Academy game, aiming to improve compatibility, stability, and performance on modern systems. OpenJK also supports additional features and modding capabilities, allowing the community to extend and enhance the gameplay experience beyond the capabilities of the original game engine.