Short answer
Hades' Star is a mobile-first space strategy known for real-time module activation and co-op corporations. Xterium is a space MMO 4X in the same family but built around large-scale PvP: you grow an empire, command fleets and fight alliance wars that run 24/7, across three universes on one account, playable in any browser and with native iOS and Android apps. If you liked the space-strategy core of Hades' Star but want deeper PvP, persistent empire-building and cross-device play, Xterium fits — and it is free with no pay-to-win.
Why Hades' Star players try Xterium
Same genre, a different emphasis. Here is what Xterium adds.
Large-scale PvP
Alliance wars with dozens of players coordinating attacks, defense and diplomacy — PvP is the core, not an aside.
Browser and mobile
Play in any browser or with native iOS and Android apps — one account, synced, not mobile-only.
Persistent empire
Grow many planets and fleets over time; the world keeps developing while you are away.
Three universes
War of Alliances, Classic, Reborn — different tempo and balance on one account.
Open mechanics
Every economy and combat formula is public in the knowledge base — no guesswork.
Free, no pay-to-win
Premium is convenience only. Every strategy and victory is reachable for free.
Xterium vs Hades' Star
Honest comparison on the parameters that matter for choosing.
| Parameter | Xterium | Hades' Star |
|---|---|---|
| Focus | Large-scale PvP alliance wars | Co-op + PvE with some PvP |
| Platform | Browser + native iOS/Android | Mobile-first |
| Scale | Empire of many planets + fleets | Focused fleet/ship management |
| Worlds | Three universes, one account | Shared world |
| Pace | Persistent, asynchronous 24/7 | Real-time module activation |
| Free-to-play | Fully, no pay-to-win | Free-to-play |
Both are space strategies — pick by emphasis: co-op and real-time modules (Hades' Star) or a persistent PvP empire with alliance wars (Xterium).
Where Hades' Star is stronger — and who should stay
Honest take: Hades' Star is more polished as a pure mobile experience, has a lower skill floor and its co-op corporation play is gentler than full-scale PvP. If you want a relaxed, co-op-first mobile game, stay with it. Xterium fits if you want a persistent empire and large-scale alliance warfare, on both browser and mobile. Coming over? Start with the beginner guide and join an alliance in week one. (Xterium has run since 2013.)