Games like Tabletopia
Games like Tabletopia include Tabletop Simulator, UNO, Stardew Valley, Talisman: Digital Classic Edition, and Once Human. We matched them by the tags players give Tabletopia on Steam (Sandbox, Tabletop, Free to Play, Board Game, and Game Development): closest matches first, and among equally close ones the better-known games.

Tabletop Simulator
Shared: Tabletop · Board Game · Sandbox

UNO
Shared: Tabletop · Board Game · Multiplayer

Stardew Valley
Shared: Multiplayer · Sandbox · Simulation

Talisman: Digital Classic Edition
Shared: Tabletop · Board Game · Multiplayer

Once Human
Shared: Free to Play · Multiplayer · Sandbox

Garry's Mod
Shared: Sandbox · Multiplayer · Casual

Trove
Shared: Free to Play · Sandbox · Multiplayer

GWENT: The Witcher Card Game
Shared: Free to Play · Strategy · Multiplayer

Where Winds Meet
Shared: Free to Play · Multiplayer · Simulation

TaleSpire
Shared: Tabletop · Board Game · RPG

Mount & Blade II: Bannerlord
Shared: Sandbox · Strategy · Multiplayer

Liars Bar
Shared: Multiplayer · Casual · Tabletop

Albion Online
Shared: Free to Play · Sandbox · Multiplayer

Crusader Kings II
Shared: Sandbox · Strategy · Simulation

SMITE®
Shared: Free to Play · Multiplayer · Strategy

Bloons TD 6
Shared: Multiplayer · Strategy · Sandbox

Marvel Rivals
Shared: Free to Play · Multiplayer · RPG

Don't Starve Together
Shared: Multiplayer · Sandbox · Co-op

Chess Ultra
Shared: Tabletop · Board Game · Strategy

Brawlhalla
Shared: Free to Play · Multiplayer · Casual

Rento Fortune: Online Dice Board Game (大富翁)
Shared: Board Game · Tabletop · Multiplayer

War Thunder
Shared: Free to Play · Simulation · Multiplayer

Wobbly Life
Shared: Sandbox · Multiplayer · Simulation

The Scroll of Taiwu : Beyond The Dome
Shared: Sandbox · RPG · Strategy