Co-op games like Monster Master
Below are 8 cooperative Steam games similar to Monster Master, ranked by player overlap and content similarity. Every pick supports cooperative play — online co-op, LAN co-op, or shared/split-screen — so you can play with friends right out of the box. imho.run pulls from the same Steam category data Valve uses internally, so "Co-op" here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Monster Master page.
Ranked picks
- 1
Inheritors2078
Online Co-op alternative to Monster Master — playable with friends. Shares Action and Strategy with Monster Master.
Inheritors 2078 is an RTS/TPS/FPS hybrid game with full Multiplayer & Co-op support, taking its events in the near future where the world is being dominated by evil robotic incarnates that were once enslaved by humans.
- 2
Paintball Madness
Online Co-op alternative to Monster Master — playable with friends. Shares Action and Strategy with Monster Master.
Paintball Madness is a super fun, fast game where you play paintball with friends. Pick a mode-play all by yourself (Free-for-All) try to grab the other team’s flag (Capture the Flag) or team up to win battles (Team Deathmatch). The faster you move, the more you win, have fun and no place to hide.
- 3
Jonas Willy Online
Online Co-op alternative to Monster Master — playable with friends. Shares Action and Indie with Monster Master.
Online third-person shooter (TPS) up to 20 players.
- 4
Together We Die
Online Co-op alternative to Monster Master — playable with friends. Shares Action and Early Access with Monster Master.
Team up and face relentless horrors in this co-op survival shooter. Survive as many days as possible against waves of unnamed creatures, upgrade gear, and compete in PvP to prove who’s the best slayer. The longer you last, the deadlier it gets.
- 5
Zombie Wasteland Together
Online Co-op alternative to Monster Master — playable with friends. Shares Action and Indie with Monster Master.
Zombie Wasteland Together is a 1–4 player co-op zombie shooter set in a post-apocalyptic desert. Team up with friends, fight endless hordes of infected, and survive using powerful weapons.
- 6
HUNGER
Online Co-op alternative to Monster Master — playable with friends. Shares Action and Early Access with Monster Master.
HUNGER throws you into the chaos of plague-ravaged Napoleonic Europe. This multiplayer extraction RPG blends brutal melee and ranged combat with deep long term character progression, questing and crafting. Scavenge for resources, battle unspeakable horrors, and outlast rival Living.
- 7
Operation: Black Genesis - The Immortal Trials
Online Co-op alternative to Monster Master — playable with friends. Shares Action and Strategy with Monster Master.
top-down co-op survival horror game where players deploy into deadly Quarantined Zones, fight mutated experiments, and extract with everything you can carry—because if you die, you lose it all.
- 8
Counter Attack
Online Co-op alternative to Monster Master — playable with friends. Shares Action and Early Access with Monster Master.
Counter Attack is a defense-based first-person shooter where you progress through story-driven missions and fend off incoming enemies.