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Be the first to review Sigma Theory: Global Cold War
A Turn-based Strategy game in a futuristic global cold war from the award-winning creators of Out There. Recruit a squad of special agents and run your intel agency to secure the control of the singularity.
Game modes: Single player
Right now the lowest price for Sigma Theory: Global Cold War we're tracking is $0.53 at Gamivo — 97% below Steam's $17.99. We compare 6 stores and prices refresh every few minutes.
The lowest price we've recorded for Sigma Theory: Global Cold War is $0.29 at Gamivo on June 26, 2026. The current best price is about 83% above that low.
76% of 1,382 Steam user reviews for Sigma Theory: Global Cold War are positive ("Mostly Positive").
Sigma Theory: Global Cold War released on April 18, 2019, developed by Mi-Clos Studio and published by Mi-Clos Studio.
Sigma Theory: Global Cold War is available on Linux, Android, PC (Microsoft Windows), iOS, Mac, Nintendo Switch. It supports single player.
Sigma Theory: Global Cold War last hit a new low of $0.29 on June 26, 2026 at Gamivo. Current best price is $0.53. Prices on this page refresh every few minutes, so check back around seasonal sales for new lows.
The cheapest Sigma Theory: Global Cold War price right now is $0.53 at Gamivo, 97% below the Steam price.
| Store | Discount | Price | Buy link |
|---|---|---|---|
 GamivoBest price | — | $0.53 | Buy Sigma Theory: Global Cold War at Gamivo |
 Kinguin | — | $0.58 | Buy Sigma Theory: Global Cold War at Kinguin |
 Instant Gaming | -94% | $1.13 | Buy Sigma Theory: Global Cold War at Instant Gaming |
 Steam | — | $17.99 | Buy Sigma Theory: Global Cold War at Steam |
 Green Man Gaming | — | $17.99 | Buy Sigma Theory: Global Cold War at Green Man Gaming |
 GamersGate | — | $17.99 | Buy Sigma Theory: Global Cold War at GamersGate |
All-time low: $0.29 at Gamivo on Jun 26, 2026 — the current best price is 83% above it.
Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.
