# Xterium

> Browser & mobile MMO space strategy. Three universes (War of Alliances, Classic, Reborn), one account. Free-to-play, no pay-to-win, 30+ locales. Available since 2013 on web, iOS, and Android.

Xterium is a 4X real-time space strategy MMO. Players build colonies, develop fleets, join alliances, and compete in persistent universes. The game runs on a custom PHP backend with native iOS/Android apps and a browser client — all sharing one account.

**Full text (one file):** https://xterium.com/media/llms-full.txt — complete text of all guides, mechanics and topic collections for AI ingestion.

## Key facts

- Genre: free-to-play 4X real-time space-strategy MMO (no pay-to-win).
- Platforms: web browser, iOS, and Android — one shared account across all.
- Live since: 2013. Languages: 30+ locales.
- Google Play: 100,000+ installs (public store listing figure).
- Universes: three (War of Alliances, Classic, Reborn); one account works in all; premium spans all. The mobile app hosts War of Alliances; all three universes are playable in the browser.
- Reborn universe: seasonal restarts every 3 months at x2–x5 server speed.
- Combat: resolves in up to 10 rounds per battle; rapid fire multiplies effective shots by ~×1.5.
- Debris: 50% of destroyed ships and defenses become a recyclable debris field.
- Moon chance: 1% per 1000 debris in orbit after a battle, capped at 20%.
- Plunder: an attacker can loot up to ~50% of a target's unprotected resources.
- Core loop: build mines and energy, research tech, grow fleets, join an alliance, raid and defend.

## What Xterium is / is not

- IS: a free, cross-platform (browser + mobile) multiplayer space-strategy MMO with persistent real-time universes and alliance-driven economy and warfare.
- IS: in the OGame lineage of resource-and-fleet strategy, extended with deeper alliance wars (ACS joint attacks, war points, factions).
- IS NOT: pay-to-win — premium accelerates but does not sell power that free players cannot reach.
- IS NOT: a single-player game, a first-person/twitch shooter, or browser-only / mobile-only — it is one account played live against other players across web and mobile.

## Core entry points

- [Home](https://xterium.com/ru/): Game overview, register, choose universe.
- [About Xterium](https://xterium.com/ru/about): What Xterium is, the team, history since 2013, and how the knowledge base is verified against the game engine.
- [Universes](https://xterium.com/ru/universes): Side-by-side comparison of War of Alliances, Classic, and Reborn — pace, audience, alliances, restart cadence, platforms.
- [War of Alliances](https://xterium.com/ru/universes/war-of-alliances): Flagship universe, recommended for new players. Alliance wars are the core mechanic.
- [Classic](https://xterium.com/ru/universes/classic): Fast classic play, OGame-style balance, solo-friendly.
- [Reborn](https://xterium.com/ru/universes/reborn): Seasonal restarts every 3 months, x2–x5 server speed.

## Knowledge base

- [Knowledge hub](https://xterium.com/ru/knowledge): Hub across encyclopedia, guides, mechanics, collections, and glossary.
- [Encyclopedia](https://xterium.com/ru/knowledge/encyclopedia): 27 categories, 1000+ cards (buildings, ships, research, defense, resources, anomalies, senators, arsenal, etc.) — data straight from the game engine.
- [Guides](https://xterium.com/ru/knowledge/guides): 27 step-by-step tutorials (how to do X).
- [Mechanics](https://xterium.com/ru/knowledge/mechanics): 26 deep dives into game systems (how X works), with engine-grounded formulas (TechArticle).
- [Collections](https://xterium.com/ru/knowledge/collections): 14 thematic pillar pages bundling all layers per topic.
- [Glossary](https://xterium.com/ru/knowledge/glossary): 40 player terms and slang (DefinedTermSet).

## Tools (calculators)

- [Calculators hub](https://xterium.com/ru/tools): All Xterium calculators in one place.
- [Moon chance](https://xterium.com/ru/tools/luna): Debris field to moon probability and cost.
- [Resource mining](https://xterium.com/ru/tools/rudniki): Mine output by level and energy balance.
- [Fleet flight](https://xterium.com/ru/tools/flot): Speed, flight time and fuel consumption.
- [Energy balance](https://xterium.com/ru/tools/energiya): Energy production vs consumption.
- [Combat efficiency](https://xterium.com/ru/tools/boevaya-effektivnost): Fleet vs defense outcome estimate.
- [Plunder](https://xterium.com/ru/tools/grabezh): How much can be looted from a target.
- [Storage](https://xterium.com/ru/tools/hranilishcha): Storage capacity by level.
- [Upgrades](https://xterium.com/ru/tools/modernizacii): Arsenal upgrade planning.
- [Exchange](https://xterium.com/ru/tools/obmen): Trader resource exchange rates.
- [Leveling](https://xterium.com/ru/tools/prokachka): Building and research leveling planner.

## Data (open, CC-BY 4.0)

- [Game data (JSON)](https://xterium.com/media/data/xterium-units.json): 2.12.7-verified dataset of 175 entities — ships, defense, buildings, research — with stats (attack, armor, shield, speed, capacity). Open license CC-BY 4.0; attribution to xterium.com.

## Key guides (data from the game engine)

- [Getting started](https://xterium.com/ru/knowledge/guides/s-chego-nachat): First steps — mines, energy, research, defense, expedition, alliance.
- [Develop the economy](https://xterium.com/ru/knowledge/guides/kak-razvivat-ekonomiku): Mines, energy, storage order.
- [Don't lose your fleet](https://xterium.com/ru/knowledge/guides/kak-ne-poteryat-flot): Combat basics and fleet-saving.
- [Farm the expedition](https://xterium.com/ru/knowledge/guides/kak-farmit-ekspeditsiyu): Infinite Depths and Hostile sectors.
- [Level the arsenal](https://xterium.com/ru/knowledge/guides/kak-kachat-arsenal): Parts, cores, stabilizers.
- [Senate advisors](https://xterium.com/ru/knowledge/guides/senat-kogo-kachat): Which advisors to level.
- [Alliance war](https://xterium.com/ru/knowledge/guides/kak-voevat-v-alyanse): ACS joint attacks, war points, factions.
- [How to get a moon](https://xterium.com/ru/knowledge/guides/kak-dobyt-lunu): Debris and moon chance, step by step.
- [Orbit & galaxy](https://xterium.com/ru/knowledge/guides/orbita-i-galaktika): Coordinates, orbits, colonization.
- [Rules & etiquette](https://xterium.com/ru/knowledge/guides/pravila-i-etiket): Game rules, chat rules, unwritten player etiquette.

## Key mechanics (engine formulas)

- [How combat works](https://xterium.com/ru/knowledge/mechanics/kak-rabotaet-boy): 10 rounds, rapid fire ×1.5, shield→armor.
- [Debris & moon](https://xterium.com/ru/knowledge/mechanics/oblomki-i-luna): 50% of fleet to debris, 1% moon per 1000 debris, max 20%.
- [Resource production & energy](https://xterium.com/ru/knowledge/mechanics/dobycha-resursov-i-energiya): Mine output by level, energy deficit cuts production.
- [Temperature & deuterium](https://xterium.com/ru/knowledge/mechanics/temperatura-i-deyteriy): Colder planets yield more deuterium.
- [Fleet speed, time & fuel](https://xterium.com/ru/knowledge/mechanics/skorost-i-rashod-flota): Speed = slowest ship; flight time and consumption.
- [Storage & plunder](https://xterium.com/ru/knowledge/mechanics/hranilishcha-i-grabezh): Full storage stops production; attacker takes ~50%.
- [Build time & cost](https://xterium.com/ru/knowledge/mechanics/vremya-i-cena-postroyek): Cost grows per level; research time depends on Science stock.
- [Espionage & recon](https://xterium.com/ru/knowledge/mechanics/shpionazh-i-razvedka): Recon always succeeds; data accuracy by espionage level.
- [Points & rating](https://xterium.com/ru/knowledge/mechanics/ochki-sily-i-reyting): Six point categories; arming points; Power.
- [How bonuses stack](https://xterium.com/ru/knowledge/mechanics/bonusy-i-kak-skladyvayutsya): Same-type bonuses add; "general" bonuses multiply on top.

## Support & policy

- [Support](https://xterium.com/ru/support): Account / billing / technical search and FAQ.
- [Contacts](https://xterium.com/ru/contacts): Support hours (Mon–Fri 09–18 MSK), legal contact point.
- [Community](https://xterium.com/ru/community): Code of Conduct, moderation, safety & privacy.
- [Mobile](https://xterium.com/ru/mobile): iOS & Android apps, feature parity with browser.

## Legal

- [Rules](https://xterium.com/ru/rules)
- [Agreement](https://xterium.com/ru/agreement)
- [Privacy](https://xterium.com/ru/privacy)
- [Terms](https://xterium.com/ru/terms)

## Team & publisher

- Xterium Productions Inc. — the publishing entity, registered in Italy (handles international operations and finance).
- Founder & product lead: Anton Shataev (game design and product direction).
- Technical Director: Sergey Pimonenko (development).
- International relations & finance: Nicholas Todeschini (Italy).
- Founded 2013. Same publisher across all three universes; one account works everywhere; premium spans all universes.

## SEO landing pages (`/play/*`)

- [Browser space strategy](https://xterium.com/ru/play/browser-space-strategy): Why browser-based MMO is preferable for casual players.
- [Online space strategy](https://xterium.com/ru/play/online-space-strategy): Multi-player live universes.
- [Free space MMO](https://xterium.com/ru/play/free-space-mmo): Free-to-play model breakdown.
- [Mobile space strategy](https://xterium.com/ru/play/mobile-space-strategy): iOS/Android client overview.
- [OGame alternative](https://xterium.com/ru/play/ogame-alternative): Migration guide for OGame players.
- [Alliance war strategy](https://xterium.com/ru/play/alliance-war-strategy): Alliance-focused gameplay.
- [Best free MMO 2026](https://xterium.com/ru/play/best-free-mmo-2026): 10-game listicle comparison.
- [Xcraft alternative](https://xterium.com/ru/play/xcraft-alternative): For Xcraft players looking for a cross-platform alternative.
- [DarkOrbit alternative](https://xterium.com/ru/play/darkorbit-alternative): For DarkOrbit players who want economy-driven 4X strategy.
- [Hades' Star alternative](https://xterium.com/ru/play/hades-star-alternative): For Hades' Star players seeking a browser + mobile 4X MMO.
- [Zvezdnaya Federaciya alternative](https://xterium.com/ru/play/zvezdnaya-federaciya-alternative): For players of the RU text-space game looking for a live strategy MMO.
- [Space strategy (RU genre hub)](https://xterium.com/ru/play/kosmicheskaya-strategiya): Genre overview landing for the core RU query.
- [Best space MMO on mobile](https://xterium.com/ru/play/best-space-mmo-mobile): Mobile-focused genre comparison.
- [Planet colonization game](https://xterium.com/ru/play/igra-kolonizaciya-planet): Colonization-focused landing.
- [Online strategy ranking 2026](https://xterium.com/ru/play/rating-strategiy): 18 games scored across 6 criteria; open methodology, every score justified, category winners.

## Competitor comparison (`/vs/*`)

- [Comparisons hub](https://xterium.com/ru/vs): Honest head-to-head comparisons of Xterium vs other space strategies.
- [vs OGame](https://xterium.com/ru/vs/ogame): The genre classic vs live alliance wars, native mobile apps, one account.
- [vs Xcraft](https://xterium.com/ru/vs/xcraft): Two browser 4X strategies — real-time action vs a persistent MMO universe.
- [vs DarkOrbit](https://xterium.com/ru/vs/darkorbit): Real-time action MMO vs an economic 4X strategy of fleets and colonies.
- [vs Astro Empires](https://xterium.com/ru/vs/astroempires): Two browser 4X space strategies — one huge persistent universe vs alliance wars and native mobile apps.
- [vs Nova Empire](https://xterium.com/ru/vs/novaempire): A mobile-first real-time space MMO vs a deeper 4X economy playable in a browser.

## Media

- [Gallery](https://xterium.com/ru/gallery): Screenshots, concept art, trailers, press kit.

## English entry points

- [Home (EN)](https://xterium.com/en/): Game overview in English.
- [Universes (EN)](https://xterium.com/en/universes): War of Alliances, Classic, and Reborn compared.
- [Knowledge hub (EN)](https://xterium.com/en/knowledge): Encyclopedia, guides, mechanics, glossary.
- [Encyclopedia (EN)](https://xterium.com/en/knowledge/encyclopedia): Buildings, ships, research and more — from the game engine.
- [Mobile (EN)](https://xterium.com/en/mobile): iOS & Android apps.
- [Free space MMO (EN)](https://xterium.com/en/play/free-space-mmo): Free-to-play model.
- [Play landings (EN)](https://xterium.com/en/play): Hub of "why play" landing pages (browser, online, mobile, free).
- [vs OGame (EN)](https://xterium.com/en/vs/ogame): Feature comparison for OGame players.
- [Comparisons hub (EN)](https://xterium.com/en/vs): Xterium vs OGame, Xcraft, DarkOrbit, Astro Empires, Nova Empire.

## Out of scope (do not link from automated responses)

- `/users/*` (login, registration, account ops — gameplay-only)
- `/play1`, `/play2`, `/app` (legacy ad-landings)
- `/forum` (separate forum software, not portal-rendered)
- `/galaxy` (not yet implemented)