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Stellar Odyssey

An idle space MMORPG where you progress at your own pace, but the universe is built together.

Fact sheet

DeveloperStellar Games, a two-person studio
GenreIdle MMORPG, space sandbox
PlatformsWeb browser (desktop and mobile) and Steam (Windows desktop client)
PriceFree to play, no ads
Offline progressionCombat and gathering keep running for up to 24 hours after your last session, or 72 hours with the optional subscription
Development startedFebruary 2024
Web release27 April 2025
Steam release7 August 2026
Steam reviewsMostly Positive (August 2026)
LanguagesEnglish, Spanish, Simplified Chinese
Based inMálaga, Spain
Websitestellarodyssey.app
Steam pagestore.steampowered.com/app/4629900
Traileryoutube.com/watch?v=Wjh1K0FX1DY
Press kitstellar-odyssey-press-kit.zip
Press contactgame@stellarodyssey.app
Discorddiscord.gg/gbnkhTwJx9 (community), or imhein direct

Description

One line

Stellar Odyssey is a free-to-play idle space MMORPG where progress continues offline and a galaxy of nearly 50 million systems is colonised collectively.

Short

Stellar Odyssey is a free-to-play idle space MMORPG that runs in the browser and on Steam. Combat and gathering keep running on the server while you are offline, while exploration, crafting and base building are hands-on. Squadrons of up to 12 players on Steam, or 16 in the web galaxy, pool resources, build stations, claim systems and fight over territory in a shared, procedurally generated galaxy of nearly 50 million star systems.

Long

Stellar Odyssey is a persistent idle MMORPG set in a procedurally generated galaxy of nearly 50 million star systems. Progress is calculated on the server, so your clones keep fighting and your droids keep mining whether or not the game is open, for up to 24 hours after your last session and 72 hours with the optional subscription. A session can be five minutes or five hours.

Around that idle core sits a full MMO: manual exploration with fuel and warp mechanics, crafting with blueprints and modifiers, a technology tree, base building on any planetary body, a player-driven market, pets, dungeons with a weekly reset, and galaxy bosses fought by the whole server at once.

The social layer is where the idle loop stops being solitary. Squadrons, up to 12 players on Steam and 16 in the web galaxy, build space stations, terraform and claim systems, run cooperative dungeons that grant permanent squadron-wide bonuses, tax their territory and fight other squadrons over a battlefield map that is rebuilt every day.

Stellar Odyssey is made by two people, a married couple working as Stellar Games, with no publisher and no external funding. Development started in February 2024, the game launched on the web in April 2025, and a brand new galaxy opened on Steam in August 2026.

Key features

Exploration is the deepest system in the game and the one that pays best, so it is worth reading the four cards on it before the rest.

Idle at its coreCombat and gathering tick server-side and keep going while you are away, for up to 24 hours, or 72 with the subscription. No tab needs to stay open.
Exploration paid by distanceFuel burns one unit per light year and systems sit 10 light years apart. Every discovery is worth a star value, a body count and, critically, its distance from the starter systems, and that last part has no cap. A system 5,000 light years out pays 5,000 times more than one next door.
The AtlasA galaxy-wide database of discovered systems. Publishing one pays 1,000 credits for every point of cosmic dust it was worth to you, untaxed by your squadron, or you can keep it private so it stays hidden from anyone who has not been there. Either way your name stays on it as its first explorer, permanently.
The VoyagerThe idle half of exploration. Queue waypoints on the map, load fuel and send an unmanned expedition of up to 20 jumps that explores while you are gone, then choose what to publish. It is also the best catalyst source in the game, 8% per system against 4% jumping yourself.
Stranded, and rescued by strangersRun out of fuel and warp capsules somewhere with no gathering nodes and you are stuck. You can walk back to a starter system, or broadcast an SOS that puts your coordinates on a public list, where another player can fly out, share fuel and get paid a chest for the rescue.
A galaxy, not a lobbyNearly 50 million procedurally generated star systems with real coordinates, claimed territory and travel costs. Ten star types, from M type up to ringed dwarves and black holes, each worth a different amount to whoever finds it first.
Runes the whole galaxy chasesRare stars can hide runes. When any player finds one, the entire galaxy is told which rune it was and exactly where, and for the next four hours that system hands the same rune to every visitor who does not have it. An announcement turns into a race.
SquadronsUp to 12 members on Steam and 16 in the web galaxy. Seven headquarters buildings boost every member while they battle, gather, craft and explore, an Armory lends gear between members, and the whole thing runs on donations and a tax on what members earn.
Space stations and claimed systemsManufacture four station parts, assemble a station, then park it on a system to claim it. Every parked station gives the whole squadron 5% more income and XP everywhere they play. Terraforming makes a system inhabited, which turns on its market, and portals let members jump station to station across the galaxy.
The BattlefieldA 50-zone PvP map rebuilt from scratch every day, so no territory is ever held for good. Zones trade bonus size against badge output, and zones of the same type stack. PvP runs on its own stats and its own four-piece gear, each piece carrying one of four active skills.
Squadron dungeonsFive dungeon types whose entrances relocate across the galaxy every Friday, and your squadron needs a station in range to reach one. Ten rooms, four failures ends the run, and clearing levels grants boosts that are permanent and squadron-wide.
Galaxy bosses, four times a dayFixed UTC spawns, a 15 minute window to join and travel to its system, then a 10 minute fight against a boss that respawns stronger every time it dies, with no level requirement at all. When it finally falls, every player on the server gets boost time, including the ones who never showed up.
Crafting and catalystsBlueprints, materials, scrap and modifiers feeding gear up to legendary. Catalysts then slot into that gear: three categories tied to specific ship slots, a value rolled from rarity and a quality score out of 100, and a hard cap per stat, so a build is a stacking puzzle rather than a shopping list.
A technology tree that never finishesTwenty-one multiplicative skills across battling, gathering, exploring, crafting, pets, base building, dungeons and galaxy bosses, each upgradeable to level 100 with quantum cores. Cores accrue hourly and are tradeable, so players can buy their way up the tree with credits from other players.
Two independent worldsThe web galaxy and the Steam galaxy run as separate persistent worlds with their own economies, so new players are not walking into someone else's history.

Monetization

Stellar Odyssey is free to play, with no ads and no paywalled content. Every system, dungeon and feature is reachable by a free player. What premium buys is speed and convenience: a longer offline window, shorter cooldowns, timed experience and income boosts, and purely visual cosmetics. We describe it as pay-to-fast rather than pay-to-win, and we are happy to have that scrutinised. Free players can also buy the premium currency from other players with in-game credits on the market, which is a deliberate design choice.

This is the wording players read in the in-game store, not copy written for press. Anyone can open the game and check that it says the same thing:

The team

Stellar Games is two people, a married couple, working without a publisher or external funding.

HernánDevelopment and game design
Co-founderUX/UI and game design. She prefers to stay out of press.
Based inMálaga, Spain

Quotes

We are two people and we built an MMO, which is the one genre everyone tells you a couple cannot do. The idle framing is what made it possible: the server does the work, so the game does not need thousands of players standing in the same room at the same time to feel alive.
Hernán, Stellar Games
The galaxy has nearly 50 million systems and we did not hand-place a single one. What we hand-placed is the reason to go there.
Hernán, Stellar Games
We opened Steam as a brand new galaxy instead of merging it into the existing one. More than a year of an economy is a lot of history for a new player to walk into, and we would rather hand them a fresh galaxy than a museum.
Hernán, Stellar Games

Trailer

Stellar Odyssey - Steam Trailer on YouTube.

Screenshots

All images are free to use in coverage of Stellar Odyssey. Credit to Stellar Games is appreciated but not required.

The ship screen with equipment slots, stats and catalyst bonuses
Ship, equipment and catalyst bonuses
The galaxy map showing star systems with coordinates
The galaxy map
A squadron dungeon boss fight with the participating members listed below it
A squadron dungeon boss
Base building modules with output, tier and upkeep
Base building and upkeep
The squadron list and a full sixteen member squadron
Squadrons
A server-wide galaxy boss fight with a per-round combat log
A server-wide galaxy boss
The player-driven market with buy and sell orders
The player-driven market

Logos

Stellar Odyssey full logo
Full logo, PNG and SVG
Stellar Odyssey icon logo
Icon logo, PNG and SVG

Downloads

Contact

Press and interview requests: game@stellarodyssey.app
Discord: discord.gg/gbnkhTwJx9, or imhein direct
We answer everything, and we are happy to walk you through the systems, the economy or the monetization in as much detail as you want.