Pick two fleets from fourteen civilizations and watch them fight to the last ship, live in 3D. Both sides fly the same AI by the same rules, so the fleets decide it. Every matchup has its own link: send it, and your friends see the same battle.
Famous matchups
- Earth stands alone · Earthforce’s line against an Iron Mandate siege fleet
- Ten Bloodhammers · Korrath rams against thirty Hollow fighters and three Requiems
- Titans of light · Five Corona Thrones against five Eclipses
- Swarm vs wall · One hundred and fifty Choir fighters against a Tessellate fortress line
- The court’s vote · Varenn Regency against Selene Covenant, crescent against crescent
- Gods and elders · The Gilded Throne’s pyramids against the Elder Conclave
Made for creators
- Record a clip straight from the simulator, with sound: 16:9 for YouTube, or 9:16 for Shorts, Reels and TikTok. The matchup, the strength bars and the result are drawn on the clip.
- Five camera views: Auto follows the action by itself and slows down when a capital ship dies; two views follow one fleet each; Free lets you fly the camera (drag to turn, right-drag, WASD or the arrow keys to move, wheel or pinch to zoom); Map shows the whole field. A line above the buttons says how to steer the view you are in, and R or a double-click re-centres on the fight.
- Formations: give each side a Line abreast, Spearhead, Pincer, Shield ring or Column and see which tactics hold up. In our own test of 120 mirror battles each against a line, the Column won 71% and the Spearhead, the classic central breakthrough, 45%.
- Share the link to any matchup, then ask your audience who they think wins. The same seed always plays out the same way, so a rematch is a true rematch; roll a new seed for a different battle.
- Equal budget: give both sides the same money (₵10,000 to ₵160,000) and let them buy their fleets. Every ship’s price is its battle value, measured over thousands of simulated battles, so the fight is about choices, not who brought more.
- Up to 30 capital ships and 150 fighters a side, on six battlefields.
Clips you record are yours to post. Please link back to www.cosmicstarships.com so viewers can try their own matchup.