Sigma Theory: Nigeria - Additional Nation
A new challenger runs for the singularity: Nigeria!
Offers
What are keyshops?Official stores
Official stores with direct support.
Base game (1)
This is the base game required to play this DLC. Other expansions may also be required.
Multipacks (2)
DLCs (3)
About Sigma Theory: Nigeria - Additional Nation
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
Game details
Game details
Game modes
Languages
Audio & text: English
Text only: French, German, Russian, Simplified Chinese
Features
Sigma Theory: Nigeria - Additional Nation price history
Lowest tracked price: CA$1.69 (Jul 7, 2026) · current best: CA$3.39 across 2 stores.
Sigma Theory: Nigeria - Additional Nation reviews
88% positive reviews all-time.
Sigma Theory: Nigeria - Additional Nation — frequently asked questions
Where can I buy Sigma Theory: Nigeria - Additional Nation at the cheapest price?
Right now the cheapest offer for Sigma Theory: Nigeria - Additional Nation is CA$3.39 at Steam. KingsPrice compares 2 offers from 2 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price Sigma Theory: Nigeria - Additional Nation has ever been?
The lowest price KingsPrice has tracked for Sigma Theory: Nigeria - Additional Nation is CA$1.69 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
How can I get Sigma Theory: Nigeria - Additional Nation at a discount?
Create a free price alert on this page and KingsPrice will email you when Sigma Theory: Nigeria - Additional Nation drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
System requirements
Minimum
- OS *: Windows 7/8/8.1/10
- Processor: 1,3 GHz CPU
- Graphics: NVIDIA GT 440 or AMD Radeon HD 5550 w/ 512 MB
- Storage: 50 MB available space
Recommended
- OS: Windows 10
- Processor: Dual-core 2Ghz CPU
- Graphics: DirectX® 10 compliant graphics card
- DirectX: Version 10
- Storage: 100 MB available space