Deus Ex: Invisible War is a 2003 action role-playing video game developed by Ion Storm and published by Eidos Interactive for Microsoft Windows and Xbox. It is the second game in the Deus Ex series. The gameplay—combining first-person shooter, stealth, and role-playing elements—features exploration and combat in environments connected to multiple city-based hubs, in addition to quests that can be completed in a variety of ways and flexible character customization. Conversations between characters feature a variety of responses, with options in conversations at crucial story points affecting how some events play out. Invisible War takes place twenty years after Deus Ex. The game follows a scenario whereby the first game's events led to a period of war and economic depression dubbed the "Collapse", which resulted in several factions attaining power and influence across the world. The player character, Alex D, is evacuated from Chicago to Seattle following a terrorist attack, soon becoming embroiled in a network of plots as the world's factions fight for control of the world. In addition to the series' recurring cyberpunk setting and conspiracy theory motif, the story focuses on the theme of terrorism.