English
About the game
A new challenger runs for the singularity: Nigeria!
Sigma Theory: Nigeria - Additional Nation
where to buy cheaper: prices at 5 stores, Steam RU and KZ
Mi-Clos Studio, Goblinz Studio, FibreTigrereleased 19 February 2020Steam 85 % positive
All-time low: 77 ₽GamersBase9 November 2026price history
The Steam wallet is topped up through top-up services: their fee is already included in the true price above.
Russia
Kazakhstan- ОС *: Windows 7/8/8.1/10
- Процессор: 1,3 GHz CPU
- Видеокарта: NVIDIA GT 440 or AMD Radeon HD 5550 w/ 512 MB
- Место на диске: 50 MB
- Рекомендованные:
- ОС: Windows 10
- Процессор: Dual-core 2Ghz CPU
- Видеокарта: DirectX® 10 compliant graphics card
- DirectX: версии 10
- Место на диске: 100 MB
No separately priced editions or DLC at the stores yet.
The company is named on the site, there is an offer agreement, Russian cards or SBP are accepted, and we found no systematic complaints about undelivered goods.
This is an observation based on public data, not a guarantee.
How we assess reputationMore about the store
Reputation: averageCompany details or the offer agreement are not disclosed, or the item is sold by a third-party seller. We found no systematic complaints, but check the key region and refund terms before buying.
This is an observation based on public data, not a guarantee.
How we assess reputationMore about the store
Reputation: lowThere are systematic complaints about undelivered keys or account bans. If you buy here, keep the receipt and correspondence.
This is an observation based on public data, not a guarantee.
How we assess reputationMore about the store
Offers
| Store | Listing type | Activation region | Payment | Price | True price | Updated | |
|---|---|---|---|---|---|---|---|
| GamersBase Standard Edition | Ключ Steam | РФ и СНГ |
Payment
Карта
|
price
77 ₽
−7 %
|
true price
77 ₽
|
7 hours ago | Go to store |
| Бука Standard Edition | Ключ Steam | РФ и СНГ |
Payment
МИРVisaMastercardСБП+3
|
price
82 ₽
|
true price
82 ₽
|
18 hours ago | Go to store |
| Donatella Standard Edition | Ключ Steam | Global |
Payment
СБП
|
price
153 ₽
1 week ago
|
true price
153 ₽
|
1 week ago | Go to store |
| Steampay Sigma Theory DLC: Nigeria Additional Nation | Ключ Steam | РФ и СНГ |
Payment
МИРVisaMastercardСБП+3
|
best price
65 ₽
−21 %
3 days ago
|
true price
65 ₽
|
3 days ago | Go to store |
| Steam Россия Standard Edition | to your library | РФ и СНГ |
Payment
—
|
price
82 ₽
|
true price
88 ₽
incl. 7 % top-up fee
|
14 minutes ago | On Steam |
| Steam Казахстан Standard Edition | to your library | Казахстанnot for your region |
Payment
—
|
price
650 ₸
|
true price
118 ₽
at Bank of Russia rate, excl. cost of getting it
|
14 minutes ago | On Steam |
True price includes the top-up fee and the exchange rate, so you compare like with like.
Price history
- Stores, best price
- Steam Russia incl. top-up
- Steam Kazakhstan in ₽
We have been collecting prices for this game since 1 November 2026, so the lines are still almost flat: the history will become clearer in a couple of weeks.
Prices as a table
| When | Stores, best price | Steam Russia incl. top-up | Steam Kazakhstan in ₽ |
|---|---|---|---|
| 8 November 2026, 20:11 | 77 ₽ | 88 ₽ | 115 ₽ |
| 4 November 2026, 03:56 | 77 ₽ | 88 ₽ | 115 ₽ |
| 1 November 2026, 08:17 | 153 ₽ | 88 ₽ | 115 ₽ |
| 1 November 2026, 07:43 | 153 ₽ | — | — |
How to buy from Russia
FAQ
Where is Sigma Theory: Nigeria - Additional Nation cheapest right now?
As a key at GamersBase for 77 ₽, activating on a Russian account. On Steam for Russia, including the wallet top-up fee, it comes to 88 ₽.
Can Sigma Theory: Nigeria - Additional Nation be activated in Russia?
Yes. The game is sold on Russian Steam, and keys with the “Russia & CIS” and “Global” regions activate on a Russian account.
When was Sigma Theory: Nigeria - Additional Nation at its lowest price?
The all-time low for keys is 77 ₽: GamersBase, 09.11.2026.
How much is Sigma Theory: Nigeria - Additional Nation on Steam Kazakhstan?
About 118 ₽ at the Bank of Russia rate. You need a Kazakhstan-region account with a KZ wallet, or a gift from a friend in Kazakhstan.