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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.

OfficialNov 21, 2019 · Mi-Clos StudioSimulationStrategyFamily SharingSingle-playerSteam AchievementsWindows · Mac · Linux

Current best

$4.49

at GOG · Jul 14

All-time low

$4.49

Jul 5, 2026

Stores tracked

2

sources indexed

Review signal

76%

1,383 reviews

Sigma Theory: Global Cold War cover

Current best · GOG

$4.49$17.99−75%

Observed Jul 14

View best listing

Current low target

$4.49 · matches the current indexed low

KeyDwarf only tracks observations — checkout happens on the store.

Tracked Stores

Best indexed price $4.49 at GOG.

2/2
G

GOG

BestOfficialIn stock

Sigma Theory: Global Cold War · Region US · Jul 14

$4.49

was $17.99 · −75%

View listing
S

Steam

OfficialIn stock

Sigma Theory: Global Cold War · Region US · Jul 14

$17.99

View listing
How trust is scored: KeyDwarf combines source type, known retailer posture, marketplace risk, activation-region warnings, and source transparency. Checkout and support still happen with the external seller.

Price History

3 observations
Low $4.49
Best observed priceAll-time low

All-time low

$4.49

Jul 5, 2026 · Steam

12-week avg

$8.99

3 recent observations

Current vs low

At low

Current $4.49

Recommendation

At indexed low

current indexed price matches the low

Lowest indexed daily price per currency. KeyDwarf tracks listings and does not sell keys.

Media

12 indexed

Common Questions

Where is Sigma Theory: Global Cold War cheapest right now?

Sigma Theory: Global Cold War is currently indexed at $4.49 from GOG. Publisher, direct storefront, or authorized retail source. Check the linked store's current terms before acting.

What is the historical low for Sigma Theory: Global Cold War?

The indexed low for Sigma Theory: Global Cold War is $4.49 from Steam, observed Jul 5, 2026. The current indexed price is at that low, so KeyDwarf labels it "At indexed low".

Is the top source safe?

GOG is labeled "Official store" in the index. KeyDwarf tracks the listing and source risk, but checkout and support stay with the external store.

What is the review signal?

Sigma Theory: Global Cold War has a best indexed review signal of 76%.

Can KeyDwarf notify me about a lower price?

Use the alert target control on this page to save a watch target after sign-in.