Games like HexSwarm: Hostile Worlds
Games like HexSwarm: Hostile Worlds include UNO, Scythe: Digital Edition, Terraforming Mars, Gremlins, Inc., and For The King II. We matched them by the tags players give HexSwarm: Hostile Worlds on Steam (Board Game, Tabletop, Mechs, Turn-Based Strategy, and Sci-fi): closest matches first, and among equally close ones the better-known games.

UNO
Shared: Board Game · Tabletop · Co-op

Scythe: Digital Edition
Shared: Board Game · Tabletop · Strategy

Terraforming Mars
Shared: Board Game · Tabletop · Strategy

Gremlins, Inc.
Shared: Board Game · Tabletop · Turn-Based Strategy

For The King II
Shared: Board Game · Turn-Based Strategy · Strategy

HELLDIVERS™ 2
Shared: Co-op · Online Co-Op · Sci-fi

Lethal Company
Shared: Co-op · Online Co-Op · Sci-fi

Bloons TD 6
Shared: Co-op · Singleplayer · Strategy

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

BattleTech
Shared: Mechs · Turn-Based Strategy · Sci-fi

XCOM: Enemy Unknown
Shared: Turn-Based Strategy · Sci-fi · Strategy

Sid Meier's Civilization® V
Shared: Turn-Based Strategy · Strategy · Singleplayer

Warhammer 40,000: Dawn of War - Definitive Edition
Shared: Co-op · Strategy · Singleplayer

Tabletop Simulator
Shared: Board Game · Tabletop · Online Co-Op

For The King
Shared: Co-op · Online Co-Op · Tabletop

Sid Meier’s Civilization® VI
Shared: Turn-Based Strategy · Strategy · Singleplayer

Through the Ages
Shared: Board Game · Tabletop · Strategy

EARTH DEFENSE FORCE 5
Shared: Co-op · Mechs · Online Co-Op

Mechabellum
Shared: Mechs · Strategy · Co-op

Galactic Civilizations III
Shared: Sci-fi · Turn-Based Strategy · Aliens

Sid Meier's Civilization®: Beyond Earth™
Shared: Turn-Based Strategy · Sci-fi · Strategy

Nexus 5X
Shared: Board Game · Tabletop · Co-op

Root
Shared: Board Game · Tabletop · Turn-Based Strategy

EARTH DEFENSE FORCE 4.1 The Shadow of New Despair
Shared: Co-op · Mechs · Online Co-Op