You need Desura to install Legios (view standalone downloads)

Desura is installedLet's play! Install DesuraFor Windows(other versions)

Please Note: Legios installs in a complicated manner and may need to move or overwrite files in the Gratuitous Space Battles folder to work. While Desura attempts to manage this, it is possible that this mod may affect your game. We recommend you have a backup as Desura assumes no responsibility or liability for any issues that may arise by installing this mod, as stated in the terms of use.