Games like Desperados III
Games like Desperados III include Shadow Tactics: Blades of the Shogun, Shadow Tactics: Aiko's Choice, Desperados: Wanted Dead or Alive, Hitman: Absolution, and Partisans 1941. We matched them by the tags players give Desperados III on Steam (Real Time Tactics, Strategy, Stealth, Western, and Tactical): closest matches first, and among equally close ones the better-known games.

Shadow Tactics: Blades of the Shogun
Shared: Strategy · Stealth · Real Time Tactics

Shadow Tactics: Aiko's Choice
Shared: Real Time Tactics · Strategy · Stealth

Desperados: Wanted Dead or Alive
Shared: Strategy · Western · Tactical

Hitman: Absolution
Shared: Stealth · Assassins · Tactical

Partisans 1941
Shared: Real Time Tactics · Strategy · Stealth

Aliens: Dark Descent
Shared: Strategy · Real Time Tactics · Tactical

Commandos: Behind Enemy Lines
Shared: Strategy · Stealth · Tactical

Assassin's Creed® Syndicate
Shared: Stealth · Assassins · Singleplayer

War Mongrels
Shared: Real Time Tactics · Strategy · Stealth

METAL GEAR SOLID V: THE PHANTOM PAIN
Shared: Stealth · Tactical · Singleplayer

Assassin's Creed 2
Shared: Stealth · Assassins · Action

Call to Arms - Gates of Hell: Ostfront
Shared: Strategy · Real Time Tactics · Singleplayer

Robin Hood: The Legend of Sherwood
Shared: Strategy · Stealth · Isometric

Assassin's Creed® Unity
Shared: Stealth · Assassins · Historical

Styx: Master of Shadows
Shared: Stealth · Singleplayer · Assassins

Total War: THREE KINGDOMS
Shared: Strategy · Real Time Tactics · Tactical

Hitman: Codename 47
Shared: Stealth · Singleplayer · Assassins

Commandos 2: Men of Courage
Shared: Strategy · Stealth · Tactical

HITMAN World of Assassination
Shared: Stealth · Singleplayer · Assassins

Hitman: Blood Money
Shared: Stealth · Singleplayer · Assassins

Assassin's Creed® Origins
Shared: Stealth · Assassins · Singleplayer

Commandos 2 - HD Remaster
Shared: Strategy · Real Time Tactics · Stealth

Total War: ATTILA
Shared: Strategy · Tactical · Real Time Tactics

Total War: ROME II - Emperor Edition
Shared: Strategy · Tactical · Real Time Tactics