Sigma Protocol
Games like Sigma Protocol

Find the Steam hidden gems

multi-players with secrets you find without a guideor

Games like Sigma Protocol

A compact, intense RTS about base-building and defending the Omega Beacon across procedurally generated worlds, solo or in online co-op.

Rogue Command
A single-player RTS-roguelite combining base building, bullet-time unit control, and a fresh arsenal every run, with permadeath runs.
2026-05-14
- Action
- Warfare

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Games like Sigma Protocol | IndieDex

Sigma Protocol
Games like Sigma Protocol

Find the Steam hidden gems

multi-players with secrets you find without a guideor

Edit search

Games like Sigma Protocol

A compact, intense RTS about base-building and defending the Omega Beacon across procedurally generated worlds, solo or in online co-op.

Rogue Command
A single-player RTS-roguelite combining base building, bullet-time unit control, and a fresh arsenal every run, with permadeath runs.
2026-05-14
- Action
- Warfare

Science fiction

Strategy

Bird view / Isometric

Real Time Strategy (RTS)

Colony Siege

A physics-driven RTS/tower-defense hybrid about base building, path mazing, and defending Earth's colonies from alien swarms in solo or co-op.

2020-09-07

Strategy
Simulator

Bee Island

A lighthearted co-op strategy-sim about building and defending a bee hive, with a median playtime around six hours.

2023-08-25

Action
Strategy
Indie
Simulator

Signal Zone

A minimalist single-player post-apocalyptic survival strategy game about mining, building, and upgrading defenses to survive increasingly dangerous nightly enemy waves in quick, urgent sessions.

2026-04-07

Survival
Strategy
Bird view / Isometric

Retro Commander

A polished post-apocalyptic RTS with PvP, co-op, and cross-play, offering around 17 hours of gameplay per reviewer reports.

2023-11-24

Science fiction
Strategy
Bird view / Isometric
Indie
Real Time Strategy (RTS)

Mindustry

A deep open-ended factory management and defense game with RTS elements, cross-platform co-op and PvP, and a very positive player reception.

2019-09-26

Action
Puzzle
Survival
Strategy
Bird view / Isometric
Indie
Sandbox

Stellarcraft

A casual sci-fi tower defense adventure about exploring alien planets and fending off waves of enemies, solo or in co-op, with very positive but rough-around-the-edges reviews.

2026-03-09

Action
First person
Science fiction
Survival
Strategy
Indie
Real Time Strategy (RTS)

Sineus Arena Survivors

A solo or co-op bullet heaven survivor-like focused on Stronghold defense, random artifacts, and short addictive runs.

2026-06-22

Action
Bird view / Isometric
Indie

Executive Assault

An indie RTS/FPS hybrid that combines base building and army command with the ability to fight as one of your units in single-player, co-op, and PvP.

2015-07-17

Shooter
Action
Warfare
First person
Science fiction
Strategy
Bird view / Isometric
Indie
Real Time Strategy (RTS)

17.waves TD

A compact, co-op-focused tower defense game for up to four players, where you build and upgrade towers to repel alien waves in short, social sessions.

2026-05-29

Action
Science fiction
Strategy
Bird view / Isometric
Indie

Mushroots

An approachable free-to-play RTS with single-player, competitive, and co-op modes, offering a compact experience around two hours.

2026-07-10

Strategy

FATAL ERROR - RTS

A compact single-player RTS on digital battlefields in a computer world, where you defend the Mainframe from viruses with tactical management and base building.

2021-09-27

Action
Science fiction
Adventure
Strategy
Bird view / Isometric
Indie

Rogue Command