Games like Outbreak Overlord
Games like Outbreak Overlord include Shadow Tactics: Blades of the Shogun, Aliens: Dark Descent, Commandos: Behind Enemy Lines, Desperados III, and Shadow Tactics: Aiko's Choice. We matched them by the tags players give Outbreak Overlord on Steam (Strategy, Stealth, Tactical, Action, and RTS): closest matches first, and among equally close ones the better-known games.

Shadow Tactics: Blades of the Shogun
Shared: Strategy · Stealth · Tactical

Aliens: Dark Descent
Shared: Strategy · Tactical · Action

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

Desperados III
Shared: Strategy · Stealth · Real Time Tactics

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

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

Total War: WARHAMMER III
Shared: Strategy · RTS · Real Time Tactics

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

Men of War: Assault Squad 2
Shared: Strategy · RTS · Action

Commandos: Beyond the Call of Duty
Shared: Strategy · Action · Tactical

Total War: WARHAMMER II
Shared: Strategy · RTS · Action

Total War: THREE KINGDOMS
Shared: Strategy · RTS · Tactical

War Mongrels
Shared: Strategy · Stealth · Real Time Tactics

Company of Heroes
Shared: Strategy · RTS · Action

Commandos 3: Destination Berlin
Shared: Strategy · Tactical · Stealth

Company of Heroes 2
Shared: Strategy · Tactical · RTS

Broken Arrow
Shared: Strategy · RTS · Real Time Tactics

Command & Conquer Red Alert™ 2 and Yuri’s Revenge™
Shared: Strategy · Action · RTS

Partisans 1941
Shared: Strategy · Stealth · Tactical

Sudden Strike 4
Shared: Strategy · RTS · Tactical

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

Total War: ROME REMASTERED
Shared: Strategy · Action · RTS

Call to Arms
Shared: Strategy · Action · RTS

Total War: ROME II - Emperor Edition
Shared: Strategy · Tactical · RTS