Sigma Theory - Additional Nations Bundle DLC
Region — Works worldwide — no region restriction.
Can be activated in United States
WindowsBuy Sigma Theory - Additional Nations Bundle DLC key
Includes: Sigma Theory: Brazil - Additional Nation Sigma Theory: Nigeria - Additional Nation Sigma Theory: Brazil - Additional Nation This DLC adds a new playable nation: Brazil.Content includes: 4 new Brazilian agents: Ward, Playboy, Babel and Slaver 2 Brazilian scientists Brazilian diplomat Exfiltration in the city of Brasilia, Brazil Brazil trait: your first agent gets Ghost trait Sigma Theory: Nigeria - Additional Nation This DLC adds a new playable nation: Nigeria.Content includes: 4 new Nigerian agents: Warrior, Peace, Pure and Dealer 2 Nigerian scientists Nigerian diplomat Exfiltration in the city of Abuja, Nigeria Nigerian trait: your country is immune to armed groups
How to activate Sigma Theory - Additional Nations Bundle DLC on Steam
- 01
Buy & receive your code
Complete checkout — your code lands in your inbox in ~30 seconds, and is always available under Orders in your Gameplug account.
- 02
Open Steam
In the desktop client: top-left menu "Games" → "Activate a Product on Steam…" (or use the web link below).
- 03
Enter your key
Paste the key (format XXXXX-XXXXX-XXXXX) and accept the Steam Subscriber Agreement.
- 04
Install & play
The game joins your library permanently — install it on any machine you sign in to.
Code not working? Contact support — confirmed-invalid codes are replaced or refunded.
Sigma Theory - Additional Nations Bundle DLC system requirements
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