XO – Description


XO is a relentless, strategic fleet defense game blending real-time with pause, political intrigue and a punishing drive to survive. Take command of the last battleship, gather a fleet and try to unite five hostile factions in a desperate bid to save humanity from an unbeatable enemy. You’re outnumbered, out-gunned, and low on resources. Knowing when it’s time to fight or flee will be the key to saving the human race.


On April 20, 2015 XO was announced on Square Enix Collective – a platform where players can help shape game development and champion ideas by voting and leaving feedback. The project was met with positive reviews, and after a detailed assessment of the team and XO, Square Enix approved the project for support through the Collective. XO launched on Kickstarter and Steam Greenlight on July 20th, 2015. XO met its Kickstarter goal in just 12 days. XO entered Steam Early Access on December 1st, 2019.


  • XO is a single player game in Early Access for PC, Mac, and Linux
  • 3D, real-time with pause
  • Build a fleet and defend it from numerous threats
  • Procedural gameplay, no two games are the same