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Is Really Big Sky multiplayer or co-op?

Yes — co-op, plus local/split-screen. Really Big Sky is a retro & arcade game released in 2012, 75% positive on Steam (1,894 reviews). $1.24 on Steam.

Online multiplayerLocal / split-screenSingle-player tooParty & co-op · Retro & arcade

A super fast, twin analogue shooter for the modern age!

Steam tags: Indie, Action, Shoot 'Em Up, Space, Bullet Hell, Shooter, Twin Stick Shooter, Arcade

Do you and a friend both own Really Big Sky?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Really Big Sky is one of them — then helps you pick tonight's game with a weighted roll or a bracket.

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POPUCOM
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Tired of Really Big Sky? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Really Big Sky co-op?
Steam's store page doesn't flag a co-op category, but players tag Really Big Sky as co-op.
Does Really Big Sky have PvP?
Steam does not list PvP for Really Big Sky.
How many people play Really Big Sky?
Player counts were not available when this page was built.

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.