Buy Sigma Protocol – Lowest Price, Deals & Price History
$3.99
Compare Sigma Protocol prices across PC. See the current lowest price, price history, and system requirements.
Game Prices Across All Stores
Sigma Protocol Patch Notes And Updates
Patch Note
March 4th PatchSigma Protocol Buying and Gameplay FAQs
Where can I buy Sigma Protocol the cheapest?
The cheapest price right now is $3.99 at Steam (0% off the $3.99 list price).
How much does Sigma Protocol cost?
Right now, you can buy Sigma Protocol for as low as $3.99 ($3.99 MSRP), depending on the store and platform.
Is Sigma Protocol on Xbox Game Pass?
No, Sigma Protocol is not currently on Xbox Game Pass. The cheapest way to play is to buy it as low as $3.99, depending on the store and platform.
How much is Sigma Protocol on Steam?
On Steam, Sigma Protocol is listed at $3.99 (MSRP $3.99).
What is the historical lowest price for Sigma Protocol?
The lowest recorded price for Sigma Protocol is FREE, based on past sales and discounts.
Does Sigma Protocol have multiplayer?
Yes, Sigma Protocol has multi-player, including co-op.
Is Sigma Protocol available on PC, Xbox, PlayStation, or Switch?
Sigma Protocol is available on PC.
When did Sigma Protocol release?
Sigma Protocol launched on February 28, 2026.
How much free space do I need for Sigma Protocol?
You'll need about 500 MB of free space to install and play.