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Is Monsters sandbox multiplayer or co-op?

Yes — co-op and PvP. Monsters sandbox is a co-op horde shooter game released in 2019, 68% positive on Steam (19 reviews). $0.99 on Steam.

Co-opPvPSingle-player tooShooter · Co-op horde shooter

Multiplayer game with the ability to connect via LAN or Internet. Fight monsters alone or with friends. Find…

How Monsters sandbox plays with friends, according to Steam

Online co-op
Yes
Local / split-screen co-op
Not listed on Steam
Online PvP
Yes
LAN play
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: Arena Shooter, Hack and Slash, Zombies, Aliens, Gore, Multiplayer, Online Co-Op, Co-op

Do you and a friend both own Monsters sandbox?

Ready Up compares two Steam libraries and shows every multiplayer game you both have — including whether Monsters sandbox 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 Monsters sandbox?Free, no login — uses public Steam profiles.

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

Quick answers

Is Monsters sandbox co-op?
Yes, Monsters sandbox supports co-op.
Does Monsters sandbox have PvP?
Yes, Monsters sandbox has player-versus-player modes.
Do we both need to own Monsters sandbox to play together?
Yes. Monsters sandbox 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 Monsters sandbox?
Player counts were not available when this page was built.
Can you play Monsters sandbox on LAN?
Yes. Steam lists LAN co-op and LAN PvP for Monsters sandbox, so it works on a local network without the game's online servers.

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