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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…

How IdleOn - The Incremental MMO plays with friends, according to Steam

Online co-op
Yes
Local / split-screen co-op
Not listed on Steam
Online PvP
Not listed on Steam
LAN play
Not listed on Steam
Cross-platform multiplayer (Windows / Mac / Linux)
Yes
MMO
Yes
Single-player mode
Yes

Steam's own category list for the game, as of 2026-09-09. "Not listed" means the store page does not claim that mode; community mods or Remote Play can still add it.

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.

Do you and a friend both own IdleOn - The Incremental MMO?Free, no login — uses public Steam profiles.

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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.
Do we both need to own IdleOn - The Incremental MMO to play together?
Yes. IdleOn - The Incremental MMO is played online, so each player needs their own copy on their own Steam account (or PC Game Pass where it is offered). Steam Families can share a library, but two people cannot play the same shared game at the same time.
How many people play IdleOn - The Incremental MMO?
About 11,081 players were in-game when this page's data was last refreshed (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 2026-09-23. Powered by Steam — not affiliated with or endorsed by Valve Corporation or Microsoft. Ready Up is a Somebody Decide program. How the data works · Legal & privacy · All types · Game Pass