Fans had been asking Hello Games for a creature-battling system in No Man's Sky for years. The Xeno Arena update finally delivered it, letting players raise, train, and pit alien creatures against each other in dedicated Holo-Arena matches. The community largely loved it, with players on Reddit describing it as "a really great and simplified Pokemon clone." Now, barely settled in, the feature is already getting its first round of refinements through the game's experimental branch.
Hello Games posted the experimental patch notes to the No Man's Sky Steam community page, and the list covers a decent spread of quality-of-life changes, bug fixes, and balance tweaks specifically targeting the Holo-Arena.
What the experimental patch actually changes
Here's the lowdown on the notable fixes and adjustments:
- Level-up progress for creatures now displays correctly after a Holo-Arena battle, so you can actually see your alien companion growing stronger without digging through menus
- NPC reactions during Holo-Arena matches have been improved, making opponent trainers feel a bit less like statues
- A UI overlap bug that triggered when winning or losing a match has been squashed
- NPC opponents will no longer use a move that knocks out their own final creature, which was a pretty significant logic error that made late-match AI feel broken
And then there is the one that is genuinely hard to write with a straight face: the patch fixes "an issue that prevented creatures from depositing faecium after being fed." In plain terms, your alien pets were not pooping enough. That is now corrected.
info
Faecium is a craftable resource in No Man's Sky obtained from creature droppings. Feeding your companions is a core loop in Xeno Arena, so this fix directly affects resource gathering tied to the battling system.
Why this matters beyond the obvious jokes
The key here is that faecium is not just a throwaway resource. It feeds into crafting chains, and since Xeno Arena builds a companion care loop around feeding your creatures regularly, a bug that blocked faecium deposits was quietly cutting off a material source for players who had invested time into the system. The fix is small on paper but meaningful for anyone running the battling content seriously.
Xeno Arena itself arrived as a surprise to a lot of players. No Man's Sky is a space exploration survival game, and creature battling is a genuine genre pivot. The fact that it landed well enough to warrant rapid follow-up patches suggests Hello Games is paying close attention to how the mode is being received.
For context, the Xeno Arena update also drew attention from Pocketpair, the studio behind Palworld, whose lead publicly floated the idea of a crossover shortly before the update launched. Nothing official has come from that, but the timing was hard to ignore.
The experimental branch patch is live now for players who want to test the changes ahead of a full release. You'll want to opt into the experimental branch through Steam if you want early access. For the latest No Man's Sky coverage and gaming news as Hello Games continues refining Xeno Arena, keep an eye on what comes next from the experimental branch. If these fixes roll out cleanly, a stable patch should follow before long, and given the pace Hello Games has maintained with post-launch support, that window tends to be short. Check out our latest reviews for more on what is worth playing right now.
