Is Oh...Sir! Prototype co-op?

Oh...Sir! Prototype does not list co-op on Steam; it has Online multiplayer.

Does Oh...Sir! Prototype have PvP?

Steam does not list PvP for Oh...Sir! Prototype.

How many people play Oh...Sir! Prototype?

About 2 players were in-game when this page was built (2026-09-09).

Ready Up — what game do we play?Compare two Steam libraries →

Multiplayer games › Party & co-op › Party game

Is Oh...Sir! Prototype multiplayer or co-op?

Yes — online multiplayer. Oh...Sir! Prototype is a party game game released in 2015, 91% positive on Steam (839 reviews), with 2 playing right now. Free on Steam.

Online multiplayerParty & co-op · Party game

A Ridiculous local 1v1muliplayer Insult Simulator for two!

Steam tags: Indie, Local Multiplayer, Free to Play, Comedy, Multiplayer, Funny

Do you and a friend both own Oh...Sir! Prototype?

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

Or open the Steam store page.

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Tired of Oh...Sir! Prototype? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is Oh...Sir! Prototype co-op?: Oh...Sir! Prototype does not list co-op on Steam; it has Online multiplayer.
Does Oh...Sir! Prototype have PvP?: Steam does not list PvP for Oh...Sir! Prototype.
How many people play Oh...Sir! Prototype?: About 2 players were in-game when this page was built (2026-09-09).

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; page updated 2026-09-09. Powered by Steam — not affiliated with or endorsed by Valve Corporation or Microsoft. How the data works · Legal & privacy · All types · Game Pass