Co-op games like Game Master Engine
Below are 8 cooperative Steam games similar to Game Master Engine, 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 Game Master Engine page.
Ranked picks
- 1

TaleSpire
Online Co-op alternative to Game Master Engine — playable with friends. Shares Indie and Simulation with Game Master Engine.
TaleSpire is a beautiful way to play pen and paper RPGs online. Bring your stories to life and embark upon campaigns together with your friends, regardless of where you are in the world.
- 2

The RPG Engine
Online Co-op alternative to Game Master Engine — playable with friends. Shares Simulation and RPG with Game Master Engine.
Host immersive tabletop campaigns in a world imagined entirely by you! Build from the ground up with The RPG Engine, an intuitive virtual tabletop that lets you create unparalleled roleplaying environments for your party to get lost in.
- 3

RPG Stories
Online Co-op alternative to Game Master Engine — playable with friends. Shares Simulation and RPG with Game Master Engine.
RPG Stories 3D World Builder VTT lets you create any indoor or outdoor environment, then either export your maps to other VTTs or invite friends to play your tabletop RPG sessions online in 3D. It fully supports all three major TTRPG eras—Fantasy, Modern, and Sci-Fi.
- 4

Dungeon Full Dive: Game Master Edition
Online Co-op alternative to Game Master Engine — playable with friends. Shares Indie and RPG with Game Master Engine.
DFD: Game Master Edition is the ultimate TTRPG toolkit to bring your games to the next level. With the ability to host and manage sessions, create limitless characters and maps, and access exclusive GM tools. This edition offers unparalleled control over your tabletop experiences.
- 5

TaleSpire - Guest Edition
Online Co-op alternative to Game Master Engine — playable with friends. Shares Indie and RPG with Game Master Engine.
TaleSpire - Guest Edition lets you join, build, and play any TaleSpire campaign where the party has seats available. Has an ally of yours bought you a seat at the table? This is how you join them.
- 6

GATE
Online Co-op alternative to Game Master Engine — playable with friends. Shares Indie and Simulation with Game Master Engine.
Easily play tabletop games like D&D with your friends online. GATE was built with simplicity in mind, allowing people to play games with friends quickly and easily.
- 7

Wildshape - Map Editor (free demo)
Online Co-op alternative to Game Master Engine — playable with friends. Shares Indie and Simulation with Game Master Engine.
An all new way to create and play tabletop games in beautiful animated 3D maps!
- 8

Adunata
Online Co-op alternative to Game Master Engine — playable with friends. Shares Indie and Simulation with Game Master Engine.
Adunata is a virtual tabletop that combines the beauty of 3D immersion with the effortless speed of 2D tools thanks to intuitive 2.5D tools like Fog of War, flexible dice roll editor, dynamic conditions and more. Lead your party through seamless adventures across PC, iOS and soon tablet, and mobile.