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Multiplayer games › Strategy › Real-time strategy

Is Idle Big Devil multiplayer or co-op?

Yes — co-op. Idle Big Devil is a real-time strategy game released in 2021, 82% positive on Steam (3,831 reviews), with 10 playing right now. price varies on Steam.

Co-opSingle-player tooStrategy · Real-time strategy

Idle Big Devil is a free idle RPG game with 3D graphics. If you are interested in strategy or idle games, you might want to take a look!

Steam tags: Free to Play, Strategy, Casual, Idler, Indie, Adventure, Clicker, Card Game

Do you and a friend both own Idle Big Devil?

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

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

Quick answers

Is Idle Big Devil co-op?
Yes, Idle Big Devil supports co-op.
Does Idle Big Devil have PvP?
Steam does not list PvP for Idle Big Devil.
How many people play Idle Big Devil?
About 10 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; updated 2026-09-09. Powered by Steam — not affiliated with or endorsed by Valve Corporation.