High Quality Content by WIKIPEDIA articles! Lithtech is a game engine which was initially developed by Monolith Productions in collaboration with Microsoft. Monolith later formed a separate company, LithTech Inc., to deal with further advancements of the engine technology and currently, after a change of its corporate identity, LithTech Inc. is known as Touchdown Entertainment. A number of different video game developers, including Monolith itself, have been using Lithtech to power their first-person shooter games, establishing it as an alternative to other products, such as the Quake and Unreal engines. The Lithtech engine latest incarnation has been codenamed Jupiter Extended or Jupiter EX for short.