Mass Effect: Pinnacle Station is a downloadable content (DLC) expansion pack developed by Demiurge Studios on behalf of Mass Effect franchise creator BioWare and published by Electronic Arts for the 2007 action role-playing video game Mass Effect. Pinnacle Station was released for the Xbox 360 and Microsoft Windows on August 25, 2009. The pack follows a squad led by Commander Shepard as they undergo special operations training on Pinnacle Station, a concealed military training facility.