OtherSIde Entertainment’s co-founders, Paul Neurath and Warren Spector, first started working together in the 1990’s on pioneering games behind the genre we call immersive simulations. That included the classics Ultima Underworld and System Shock, which laid the groundwork for many games in the genre to follow. Warren and Paul also creatively directed the original Thief series, which delved into first-person stealth-action. Warren went on to explore the immersive genre further, including with the seminal Deus Ex series.