Games like Thebes
Games like Thebes include FPS Chess, Chess Ultra, 5D Chess With Multiverse Time Travel, Liars Bar, and Duelyst II. We matched them by the tags players give Thebes on Steam (Grid-Based Movement, Board Game, Turn-Based Tactics, Multiplayer, and Medieval): closest matches first, and among equally close ones the better-known games.

FPS Chess
Shared: Multiplayer · Board Game · PvP

Chess Ultra
Shared: Board Game · Multiplayer · Chess

5D Chess With Multiverse Time Travel
Shared: Board Game · Chess · Multiplayer

Liars Bar
Shared: Multiplayer · PvP · Board Game

Duelyst II
Shared: Turn-Based Tactics · Grid-Based Movement · Board Game

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

Tabletop Simulator
Shared: Board Game · Multiplayer · PvP

Carcassonne - Tiles and Tactics
Shared: Board Game · Multiplayer · Strategy

Root
Shared: Board Game · Strategy · Multiplayer

Blood Bowl 2: Legendary Edition (Classic)
Shared: Board Game · Multiplayer · Strategy

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

Mordheim: City of the Damned
Shared: Turn-Based Tactics · Multiplayer · Strategy

Richman 11
Shared: Board Game · Multiplayer · Turn-Based Tactics

Axis and Allies 1942 Online
Shared: Board Game · Turn-Based Tactics · Strategy

Blood Bowl 3
Shared: Multiplayer · Board Game · PvP

Warhammer 40,000: Battlesector
Shared: Turn-Based Tactics · Strategy · Multiplayer

Armello
Shared: Board Game · PvP · Turn-Based Strategy

Nexus 5X
Shared: Board Game · Multiplayer · Turn-Based Tactics

Rising Lords
Shared: Turn-Based Tactics · Medieval · Multiplayer

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

Gremlins, Inc.
Shared: Board Game · Multiplayer · Strategy

King Arthur: Knight's Tale
Shared: Turn-Based Tactics · Grid-Based Movement · Turn-Based Combat

Low Magic Age
Shared: Turn-Based Tactics · Grid-Based Movement · Turn-Based Combat

Hasbro's BATTLESHIP
Shared: Board Game · Multiplayer · Turn-Based Tactics