Games like Showgunners
Games like Showgunners include XCOM 2, STAR WARS Zero Company™, XCOM®: Chimera Squad, Jagged Alliance 3, and Warhammer 40,000: Mechanicus. We matched them by the tags players give Showgunners on Steam (Turn-Based Tactics, Turn-Based Combat, Tactical, Turn-Based Strategy, and Action): closest matches first, and among equally close ones the better-known games.

XCOM 2
Shared: Turn-Based Combat · Tactical · Turn-Based Tactics

STAR WARS Zero Company™
Shared: Turn-Based Tactics · Turn-Based Strategy · Turn-Based Combat

XCOM®: Chimera Squad
Shared: Turn-Based Tactics · Turn-Based Strategy · Strategy

Jagged Alliance 3
Shared: Turn-Based Tactics · Tactical · Turn-Based Combat

Warhammer 40,000: Mechanicus
Shared: Turn-Based Tactics · Turn-Based Combat · Strategy

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

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

BattleTech
Shared: Turn-Based Tactics · Turn-Based Strategy · Tactical

The Last Spell
Shared: Turn-Based Strategy · Turn-Based Tactics · Tactical

MENACE
Shared: Turn-Based Tactics · Turn-Based Strategy · Tactical

Battle Brothers
Shared: Turn-Based Tactics · Turn-Based Strategy · Tactical

Aliens: Dark Descent
Shared: Tactical · Action · Strategy

Warhounds
Shared: Turn-Based Tactics · Turn-Based Strategy · Turn-Based Combat

Gears Tactics
Shared: Turn-Based Tactics · Tactical · Strategy

Warhammer 40,000: Chaos Gate - Daemonhunters
Shared: Turn-Based Tactics · Turn-Based Strategy · Tactical

Into the Breach
Shared: Turn-Based Strategy · Turn-Based Tactics · Strategy

Xenonauts
Shared: Turn-Based Tactics · Turn-Based Combat · Turn-Based Strategy

Mutant Year Zero: Road to Eden
Shared: Turn-Based Combat · Turn-Based Tactics · Tactical

Warhammer 40,000: Mechanicus II
Shared: Turn-Based Tactics · Action · Turn-Based Strategy

Hard West 2
Shared: Turn-Based Tactics · Turn-Based Strategy · Tactical

Xenonauts 2
Shared: Turn-Based Tactics · Turn-Based Strategy · Tactical

Hard West
Shared: Turn-Based Strategy · Turn-Based Combat · Turn-Based Tactics

Songs of Conquest
Shared: Turn-Based Tactics · Tactical · Turn-Based Combat

Marvels Midnight Suns Digital Edition
Shared: Turn-Based Tactics · Turn-Based Strategy · Turn-Based Combat