Tomb Raider: The Last Revelation is an action-adventure video game developed by Core Design and published by Eidos Interactive. It was first released for PlayStation and Microsoft Windows in 1999, then on Dreamcast and Mac OS the following year. It is the fourth instalment in the Tomb Raider series. The narrative follows archaeologist-adventurer Lara Croft as she races to imprison the Egyptian god Set after accidentally setting him free. Gameplay features Lara navigating levels split into multiple areas and room complexes, fighting enemies and solving puzzles to progress.