Sirius similar games & best alternatives

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Sirius

PC (Microsoft Windows) • 2015

Should you play it?

Sirius Online is a unique, easy to play Space Action Shooter with ongoing progression. Join the Ranks of the Terran Reclaim Forces or the Sirius Colonial Council today and fight for your Faction! Explore forgotten battlefields, find Treasures, create an empire and rule the universe!

What works

  • Free to play classic version available
  • Active and dedicated developer
  • Large explorable space
  • Fluid ship controls
  • Potential for growth

Things to keep in mind

  • Very early access with limited content
  • Small and declining player base
  • Bugs and ui issues
  • Lack of tutorial and guidance
  • Server instability and abandonment

What to play next

Top picks

Games that feels the closest overall

  • QANGA

  • CastleMiner Z

  • Hades' Star

  • Sins of a Solar Empire: Trinity®

  • Evochron Mercenary

  • VoidExpanse

Less social

Games that feels like Sirius but with less teamwork and cooperation

  • Astrox: Hostile Space Excavation

  • Galaxy on Fire 2™ Full HD

  • Eventide Matter

  • 3030 Deathwar Redux - A Space Odyssey

  • Starcom: Nexus

  • Space Scavenger

More expressive

Games that feels like Sirius but with more self-expression and customization

  • Avorion

  • Star Valor

  • EVERSPACE™ 2

  • Star Control®: Origins

  • PULSAR: Lost Colony

  • Chicken Invaders Universe

More creative

Games that feels like Sirius but with more room to create and customize

  • Empyrion - Galactic Survival

  • Stellar Warfare

  • Starship EVO

  • CounterAttack: Uprising

  • Astrox Imperium

  • Space Pirates and Zombies

More story-driven

Games that feels like Sirius but with deeper narrative immersion

  • Gaia Beyond

  • Underspace

  • Between the Stars

  • SpaceBourne 2

  • Nexus - The Jupiter Incident

  • SpaceBourne

Choose your own criteria ->

Similarity map

How to compare these games

Compare nearby games

Each card is a nearby game on the similarity map, compared with Sirius. Swipe sideways to move between games. Titles already listed in What to play next are left out.

  • Cover and title: open that game’s page.
  • What works / keep in mind: the same highlights as the desktop comparison panel.
  • Bars: the main motivational differences versus this game.
How to use the graph

Similarity map

Each dot is a game placed from its motivation profile relative to this page’s game. Direction shows which motivation differs most; distance along that axis shows how large the gap is.

  • Purple star: this page’s game at the centre — everything is relative to it.
  • Direction: each axis is a main motivational difference vs this game (e.g. more / less competitive).
  • Distance on an axis: how large that difference is (ring scales show +/− points).
  • Coloured chips: click to highlight games that mainly differ on that motivation; click again to reset.
  • Dotted line: link between this page’s game and the one selected for comparison.
  • Hover a dot to preview that game in the panel on the right; click to keep that comparison.
  • Scroll or double-click the chart to zoom.

How to read the map This is a polar difference map: direction = which motivation differs, and distance = how much (same units as the sidebar deltas).

Swipe to compare nearby games with Sirius. These titles are not in What to play next.

Sirius: Less representative of its motivational profile, with noticeable differences. Motivations that often define this kind of title include Competition, Status, Story, Fantasy. Here, the score leans higher than usual among comparable games on Exploration, Idle, Cooperation.

Last update: 21/08/2026