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Is IdleOn - The Incremental MMO multiplayer or co-op?

Yes — co-op. IdleOn - The Incremental MMO is a mmo game released in 2025, 80% positive on Steam (21,716 reviews), with 11,081 playing right now. Free on Steam.

Co-opSingle-player tooRPG · MMO

The incremental idle MMO where your heroes keep fighting while you're gone! Spend their loot on upgrades, unlock classes from Elemental-Wizard to…

Steam tags: Idler, Pixel Graphics, Free to Play, MMORPG, Management, RPG, Multiplayer, Clicker

Do you and a friend both own IdleOn - The Incremental MMO?

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

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Tired of IdleOn - The Incremental MMO? The Swap tab finds the closest unowned games of the same type that are newer or rated higher.

Quick answers

Is IdleOn - The Incremental MMO co-op?
Yes, IdleOn - The Incremental MMO supports co-op.
Does IdleOn - The Incremental MMO have PvP?
Steam does not list PvP for IdleOn - The Incremental MMO.
How many people play IdleOn - The Incremental MMO?
About 11,081 players were in-game when this page was built (2026-09-08).

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.