Enemies can, however, move in any direction, and auto-aim is utilized to allow the player to fire at nearby enemies or objects both inside and outside of the 2D plane.

Shadow Complex is presented in 2.5D format the game world is fully three-dimensional, but the player can only move in two dimensions, simulating the environment of a classic side-scrolling video game. A limited physical printing of 7,500 for the PlayStation 4 was released on Augthrough Limited Run Games. A Remastered version was released for Microsoft Windows in December 2015, for Xbox One in March 2016 and for PlayStation 4 in May 2016. It also broke all sales records for Xbox Live Arcade titles, selling over 200,000 units within the first week of release and as of year-end 2011, has sold over 600,000 copies. Critics praised the gameplay, narrative and graphics, with several reviewers also stating that it was fairly priced. It has received and been nominated for several Game of the Year and Editor's Choice Awards.

Shadow Complex's reception has been positive. The game, inspired by the Metroid series, is a 2.5D Metroidvania-style game where the player controls Jason through the underground complex, defeating hostile forces, and finding various power-ups that enable further exploration of the complex. Jason must rescue Claire and discover the plot behind the faction operating the complex. He finds a massive underground complex with soldiers and high-end technology. When she does not respond to his calls, Jason follows her. The game follows Jason Flemming and his new girlfriend Claire, who opts to explore some caverns the two stumble across. The original script of Shadow Complex was written by Peter David. Shadow Complex is a platform-adventure video game developed by Chair Entertainment in association with Epic Games and published by Microsoft Game Studios for the Xbox 360 through Xbox Live Arcade in 2009.

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