Yes — co-op and PvP. Sins of a Solar Empire®: Rebellion is a job & management sim game released in 2012, 93% positive on Steam (16,015 reviews), with 280 playing right now. $19.99 on Steam.
Command a space-faring empire in Sins of a Solar Empire: Rebellion, the new stand-alone expansion that combines 4X depth with real-time strategy gameplay.
Steam tags: Management, Diplomacy, Online Co-Op, Multiplayer, Singleplayer, Simulation, Space, Strategy
Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Sins of a Solar Empire®: Rebellion is one of them — then helps you pick tonight's game with a weighted roll or a bracket.
Compare our libraries Steam store pageTired of Sins of a Solar Empire®: Rebellion? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.
Ready Up is a free tool: enter two Steam usernames and it lists the multiplayer games you both own, runs a bracket to pick one, and suggests new co-op games that fit how you both play. Ratings, tags and player counts from Steam and SteamSpy; updated 2026-09-08. Powered by Steam — not affiliated with or endorsed by Valve Corporation.