Steam

XO

Also known as XO, steam:399720, x

Build a fleet and lead humanity to safety. Grow your fleet using force, diplomacy or guile... and try to stay ahead of the relentless Harvesters. Each ship you add to your fleet gives you powers but also reduces your limited resources in this challenging RTS-with-pause game.

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Last update

19 May 2026

Original sources

Latest update

StorePublished 26 Jun 2025

v1.49fNvidia bug fix update: XO 1.49f “Arr Tee Exxed”

This one of those one small step for a man, one giant leap for XO type of updates. I finally crushed the Nvidia 30xx/40xx bug! Some time ago I made a decision to laser focus on this bug until I got it fixed. It took mon…

8 changesFixBalance

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Latest updates

Update history

Browse past updates and patch notes for this game.

20updates

April 2025
New update: XO 1.49e “Bloodless Victory”We're happy to present you a new update to XO! Features: New achievement, Peaceful Victory New Starting Fleet, Rogue (unlocked with Peaceful Victory achievement) New achievement, Nurse the Tanks New achievement, Roll th…Eventv1.49e19 changesFixGameplay28 Apr 2025
January 2025
We're delighted to provide you another free update to XO! INITIAL MODDING SUPPORT: The biggest news in this update is that we’ve added initial support for modding - you can freely edit ships, items and sectors! Ships: S…v1.4928 changesFixBalanceStore20 Jan 2025
January 2024
Bug Fix Update 1.48b2This is purely a bug fix update - Attempt to fix a bug with certain Radeon cards not displaying some text in buttons *If you have a Radeon card and have experienced this issue please let us know how this goes - Fix boar…Announcementv1.48b21 changeBalance26 Jan 2024
December 2023
Minor update 1.48b1This update corrects a handful of bugs from yesterday's major update. Thanks so much for the bug reports, you all are just awesome people Corrected an issue that could lead to a harvesterless/eventless game The tutorial…Eventv1.48b15 changesFixGameplay22 Dec 2023
We're delighted to provide you another free update to XO! CUSTOM PLAY STYLES: You can now customize how you play XO! The Harvester wave speed can be set - including movement between jumps only, which gives you effective…v1.4813 changesGameplayBalanceStore21 Dec 2023
May 2023
XO 1.47e " Yaw Be Careful Now " This is primarily a balance and bug fixing update Features All Harvester warships move much, much slower now. Reapers remain the same speed. The game now loads without displaying the ‘wai…v1.47e30 changesFixBalanceStore28 May 2023
April 2023
Beta 1.47 Feature OverviewWatch Brian Jamison, Creative Director of XO cover the major features of XO 1.47!Announcementv1.4721 Apr 2023
We are very pleased to release another major update to XO! SHIP THRUSTERS and MOVEMENT: All ships now use RCS thrusters for movement. This was the last major feature remaining prior to release and wow it was a massive e…v1.4714 changesGameplayBalanceStore09 Apr 2023
October 2022
1.46d - minor bugfix releaseThis is a bugfix release - thanks to your excellent bug reports here's a few things we corrected: - Added new captain’s log entries, corrected some issues - Adding spare parts for maintenance gives immediate use option…Eventv1.46d2 changesFix26 Oct 2022
1.46c is an update to Monday's big release. - New models for all gunboats - Minerboats can now be created from the Perpetuator - Muster should no longer break jump - Possibly closed off a Harvesterless exploit - Fixed i…v1.46c1 changeFixSecurity14 Oct 2022
Gargantuan Update! XO 1.46 “Observing the Perpetual Conservancy” We thought it’d be a good idea to release a gargantuan update! NEW SHIPS: Empire Perpetuator This small Empire carrier isn’t able to repair gunboats, but…v1.4610 changesGameplayBalanceStore10 Oct 2022

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