This content requires the base game in order to play:X4: Foundations
Game Description
System Requirements
Activation Details
Enjoy a long-awaited reunion with the Boron in X4: Kingdom End, the fourth expansion for X4: Foundations, which completes the collection of the main factions in the X Universe. Discover the unique Boron ships, and fly them through distinctive systems, on a journey of discovery. Visit fascinating places, uncover old secrets and make new acquaintances. Embark on an immersive new chapter of X4!
An expedition into the unknown Heretic's End holds a secret to be discovered. Flickering lights on a previously inactive jump gate are causing a stir. Joining forces in the name of cooperation, a multifactional expedition sets out to investigate the phenomenon. Prepare for an immersive story of collaboration, where many vastly different minds must pull together for the greater good.
Unique new ships will take your breath away Boron ships are as unconventional as you would expect from such an extraordinary species. X4: Kingdom End introduces a wide variety of Boron ships of different classes, which excel with their fluid designs, their wavelike shell animation, and their distinctive grace and uniqueness. Come aboard and experience what may very well be the most breath-taking ships in the X-Universe. Among others, you can look forward to:
Ray (Destroyer) As though it had just emerged from the water, and was waiting for its prey with bared teeth, the Ray destroyer impresses with its delicate construction. But, one should not be dazzled by it for too long; even the normally peace-loving Boron will defend themselves if necessary.
Shark (Carrier) With its sweeping form and a dynamism all of its own, the Boron XL carrier immediately casts a spell over anyone who sets eyes on it. Perhaps its greatest surprise, however, is easily overlooked at first glance. With the ability to have smaller ships dock and launch from the side, the carrier provides a distinct advantage on the battlefield that should not be underestimated.
OS: Windows 10 (64-bit), Windows 8.1 (64-bit), Windows 7 SP1 (64-bit)
Processor: Intel i5-4590 3.3GHz or AMD equivalent
Memory: 8 GB RAM
Graphics: Nvidia GTX 780/970 or AMD equivalent (Vulkan support required)
Storage: 15 GB available space
windows Recommended
OS: Windows 10 (64-bit)
Processor: Intel Core i7-6700 or AMD equivalent
Memory: 16 GB RAM
Graphics: Nvidia GTX 1070 or AMD equivalent (Vulkan support required)
Storage: 20 GB available space
To activate the game, you need a Steam Account
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-04-21
From Wishlist to Courtroom: The Steam Lawsuits Explained
There have been numerous Steam court case lawsuits throughout the years and ever since the start of the year they have made the pile even bigger! We decided to check out some of the latest accusations against the popular gaming platform as well as go through some of the previous cases that caused a stir of Valve legal issues in the past! Gabe Newell and Valve have definitely not been strangers to the court system…
As you probably know, in a huge variety of game titles there are usually a lot of mainline task objectives, but very often there are multiple side quests that would advance you further in the gameplay. This is exactly why we decided to run a Side Quest promotion on our YUPLAY site. In order to participate in it you have to make an order over 20€ between 17.04.2026 18:10 CET and 20.04.2026 02:00 CET, and you will get a 1€ voucher for next purchase…