Games like Sigma Protocol

If Sigma Protocol left you wanting something competitive and replayable, you have options. These games line up well for what comes next.

Cheaper than Sigma Protocol

Medieval war simulator RTS

Medieval war simulator RTS

A dynamic RTS game where you command diverse units and build strategic bases to conquer enemies.

50% of 2 Steam reviews are positive$0.49
Strategy Core

Strategy Core

Lead your clan from a small settlement all the way to the launch of a colony ship.

100% of 10 Steam reviews are positive$0.69
Call Of The Mighty Warriors

Call Of The Mighty Warriors

Two kingdoms in battle against each other, the king Bennevert called for the legendary mighty mercenaries to defend strategic posts in dangerous…

60% of 298 Steam reviews are positive$0.49
Citadel Siege

Citadel Siege

Can your strategy hold against the darkness?

93% of 94 Steam reviews are positive$0.49
First Day: Home Defender

First Day: Home Defender

Build and protect your home after a nuclear apocalypse!

72% of 32 Steam reviews are positive$0.49
Combat Rush

Combat Rush

This "snake", but instead of the snake you have mercenaries with weapons in their hands!

100% of 15 Steam reviews are positive$0.91
The Last Hearth Defense

The Last Hearth Defense

Your mission in this game is to outwit, outmaneuver, and outlast the enemy waves using smart tactics and powerful upgrades.

93% of 88 Steam reviews are positive$0.49
Space War: Infinity

Space War: Infinity

Vertical semi-procedural shmup with upgrades, real-time enemy waves, and infinite replayability.

93% of 117 Steam reviews are positive$0.98
Clash of Castle

Clash of Castle

To attack! Deploy your troops and destroy the enemy castle!

50% of 30 Steam reviews are positive$0.69
Stellar Empires

Stellar Empires

Indie strategy game where you take control of an Empire, lead it to complete domination by colonizing new planets!

80% of 5 Steam reviews are positive$0.69

Hidden gems like Sigma Protocol

Rogue Command

Rogue Command

Command units, call down bases and draft a fresh build after every battle in a fast sci-fi RTS where each run plays out differently.

89% of 1,058 Steam reviews are positivePlayers online now: 39$19.99
D.O.T. Defence

D.O.T. Defence

Welcome to the frontlines! Build towers, muster armies, and conquer the map.

85% of 211 Steam reviews are positive$9.74
From Glory To Goo

From Glory To Goo

Grow a settlement on a hostile world, wall it in, and answer the Goo with orbital fire before they reach your gates.

96% of 1,858 Steam reviews are positivePlayers online now: 97$7.79
ZeroSpace

ZeroSpace

Lead huge armies and orbital strikes in a fast sci-fi war, or join a friend in a co-op campaign that changes every season.

78% of 1,355 Steam reviews are positivePlayers online now: 96$39.99
Frontline Crisis

Frontline Crisis

Defend humanity's last hope, pilot a powerful mech, in Frontlines Crisis!

87% of 348 Steam reviews are positive$5.99
Artificial Extinction 2

Artificial Extinction 2

A Tower Defense hybrid where survival depends on strategy and firepower.

77% of 121 Steam reviews are positive$13.99
Warlords Under Siege

Warlords Under Siege

Warlords Under Siege is a mix of RTS and Roguelike genre, where you build a small city and defend it against continuous waves of enemies.

76% of 437 Steam reviews are positive$5.99
Silica

Silica

Battle across the dunes of Baltarus as a soldier, then take command of the whole war from above, alone or with friends.

76% of 4,621 Steam reviews are positivePlayers online now: 352$24.99
ReEarth

ReEarth

ReEarth is an exciting TD & (RTS) indie game. Here, you will play as humanity's last hope.

74% of 116 Steam reviews are positive$7.99
Colony Siege

Colony Siege

Colony Siege combines the best of RTS and tower defense, including base building, mazing, and unit physics.

91% of 199 Steam reviews are positive$19.99
Operation: Polygon Storm

Operation: Polygon Storm

A fastpaced, military tug-of-war game with minimal micromanagement. Choose and deploy from a mix of specialized military units to overwhelm the enemy.

69% of 233 Steam reviews are positivePlayers online now: 1$14.99
Reignfall

Reignfall

Reignfall is a real-time strategy game with elements of city-building and third-person action.

88% of 407 Steam reviews are positivePlayers online now: 1$4.99

Newest games like Sigma Protocol

Silica

Silica

Battle across the dunes of Baltarus as a soldier, then take command of the whole war from above, alone or with friends.

76% of 4,621 Steam reviews are positivePlayers online now: 352$24.99
Flow Of War

Flow Of War

A unique blend of base building and wave defense. Workers automatically gather resources and manage your economy while you focus on strategy.

85% of 40 Steam reviews are positive$12.99
ZeroSpace

ZeroSpace

Lead huge armies and orbital strikes in a fast sci-fi war, or join a friend in a co-op campaign that changes every season.

78% of 1,355 Steam reviews are positivePlayers online now: 96$39.99
D.O.T. Defence

D.O.T. Defence

Welcome to the frontlines! Build towers, muster armies, and conquer the map.

85% of 211 Steam reviews are positive$9.74
Artificial Extinction 2

Artificial Extinction 2

A Tower Defense hybrid where survival depends on strategy and firepower.

77% of 121 Steam reviews are positive$13.99
17.waves TD

17.waves TD

17.waves is an online co-op tower defense game for up to four players.

94% of 17 Steam reviews are positive$5.19
Rogue Command

Rogue Command

Command units, call down bases and draft a fresh build after every battle in a fast sci-fi RTS where each run plays out differently.

89% of 1,058 Steam reviews are positivePlayers online now: 39$19.99
Signal Zone

Signal Zone

Defend your base against increasingly dangerous enemy waves each night in this minimalist survival strategy.

76% of 103 Steam reviews are positive$11.99
Stellarcraft

Stellarcraft

Stellarcraft is a sci-fi tower defense adventure: explore alien planets, gather resources, build defenses, and fend off waves of enemies, solo or in…

88% of 76 Steam reviews are positive$9.99
Chip ‘n Clawz vs. The Brainioids

Chip ‘n Clawz vs. The Brainioids

Build bases, lead an army of robots, and squash brains in this radical hybrid between RTS and third-person shooter.

84% of 91 Steam reviews are positivePlayers online now: 3$29.99
Ant Guardians

Ant Guardians

It’s a defense game where you create your own strategy, grow your units, and defend against enemies.

83% of 18 Steam reviews are positive$3.99
Little Kingdom RTS

Little Kingdom RTS

Little Kingdom RTS is an indie real-time strategy game set in a medieval fantasy world.

86% of 63 Steam reviews are positive$1.24