Games like Boss Key
Games like Boss Key include Tabletop Simulator, Yu-Gi-Oh! Master Duel, Besiege, Terraria, and Magic: The Gathering Arena. We matched them by the tags players give Boss Key on Steam (Trading Card Game, Sandbox, PvE, Card Game, and Tabletop): closest matches first, and among equally close ones the better-known games.
Tabletop Simulator
Shared: Tabletop · Sandbox · Trading Card Game
Yu-Gi-Oh! Master Duel
Shared: Trading Card Game · Card Game · PvP
Besiege
Shared: Sandbox · PvP · PvE
Terraria
Shared: Sandbox · 2D · PvP
Magic: The Gathering Arena
Shared: Trading Card Game · Card Game · PvP
Slay the Spire 2
Shared: Card Game · Deckbuilding · Turn-Based Combat
GWENT: The Witcher Card Game
Shared: Card Game · Trading Card Game · PvP
Garry's Mod
Shared: Sandbox · Moddable · Multiplayer
People Playground
Shared: Sandbox · 2D · Moddable
Shadowverse: Worlds Beyond
Shared: Trading Card Game · PvP · Deckbuilding
Cardfight!! Vanguard Dear Days
Shared: Trading Card Game · PvP · PvE
CarX Drift Racing Online
Shared: Sandbox · PvP · Simulation
Totally Accurate Battle Simulator
Shared: Sandbox · PvP · Simulation
GoreBox
Shared: Sandbox · PvE · PvP
Space Engineers
Shared: Sandbox · PvP · Simulation
Don't Starve Together
Shared: Sandbox · PvP · 2D
Rust
Shared: PvP · Sandbox · Crafting
Yu-Gi-Oh! Legacy of the Duelist
Shared: Card Game · Trading Card Game · Deckbuilding
Yu-Gi-Oh! Legacy of the Duelist : Link Evolution
Shared: Trading Card Game · Card Game · Simulation
Rento Fortune: Online Dice Board Game (大富翁)
Shared: Trading Card Game · Tabletop · Card Game
Teardown
Shared: Sandbox · PvP · Indie
Armello
Shared: PvP · Card Game · 3D
Project Zomboid
Shared: Sandbox · PvP · Multiplayer
Animation Throwdown: The Quest for Cards
Shared: Trading Card Game · Card Game · 2D