Games like Sigma Theory

Here are some great alternatives to Sigma Theory by Plug In Digital :
MechCom 3 - 3D RTS
MechCom 3 - 3D RTS
★3.9
Conflict of Nations: WW3
Conflict of Nations: WW3
★4.4
Strategy&Tactics 2: WWII
Strategy&Tactics 2: WWII
★4.1
Diamant Rose
Diamant Rose
★4.1
RISK: Global Domination
RISK: Global Domination
★4.4
Space Takeover: Over City
Space Takeover: Over City
★4.2
Global Strategy 2025 - Sandbox
Global Strategy 2025 - Sandbox
★3.4
Blacklist: Special Ops Shooter
Blacklist: Special Ops Shooter
★4.3
First Strike
First Strike
★3.5
Latin America Empire
Latin America Empire
★4.1
World Empire
World Empire
★4.2
Asia Empire
Asia Empire
★4.3
Africa Empire
Africa Empire
★4.3
Middle East Empire
Middle East Empire
★4.2
Secret Agent Elite Spy Mission
Secret Agent Elite Spy Mission
★3.5
Planet Fights
Planet Fights
★3.5