Steam game

Sigma Protocol

Command your forces against endless waves of enemies in this intense RTS. Build bases, manage resources, and defend the Omega Beacon across procedurally generated worlds. Play solo or team up with friends via Steam multiplayer.

$1.99 February 28, 2026

By NextGen Solutions LLC

Windows
View on Steam
Sigma Protocol - NextGen Solutions LLC. Popular. Released February 28, 2026
Screenshot of Sigma Protocol gameplay showing in-action mechanics Screenshot 2 of Sigma Protocol - additional gameplay view Screenshot 3 of Sigma Protocol - more gameplay footage Screenshot 4 of Sigma Protocol - final gameplay screenshot

Overview

About this game

Survive endless waves of enemies in this real-time strategy game. Build your base, manage resources, and defend against increasingly difficult attacks.

Key Features

• Wave-based RTS gameplay

• Build bases and train units

• Collect resources and unlock upgrades

• Multiple difficulty levels

• Steam multiplayer co-op (up to 4 players)

• Four different map environments

Gameplay

Construct buildings, train units, and survive enemy waves. Gather gold and iron to expand your base and unlock new technologies. Work toward building the Omega Beacon to achieve victory, or continue in endless survival mode.

Command infantry, artillery, tanks, and other units to defend your base. Build towers, walls, and production facilities to strengthen your defenses.

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