Top similar games like Sigma Protocol:

Co-op and Single player Tower Defense genre.

Take command of a carrier strike group, a destroyer squadron or a lone submarine in a real-time naval tactics game. Outsmart, outmaneuver or outgun enemy fleet on, under and over the seas.

Element TD 2 sees you combine powerful elements to create unique towers. Prove your defenses against challenging foes, and compete or cooperate with others to determine who has mastered the elements.

A grand and intense tower defense science fiction game, where you only need to purchase once to enjoy all the content of the game.

Bunker Defense is a tower defense game for 1-4 players. Waves of enemies attack your base, and you must defend it by building different kinds of defenses.

Stellarcraft is a sci-fi tower defense adventure: explore alien planets, gather resources, build defenses, and fend off waves of enemies, solo or in 4-player co-op. 🚀

Defend your kingdom against legendary monsters. Place turrets strategically to block their path. Upgrade your defenses to fend off enemy hordes. Become the legendary guardian of the earth alone or in co-op!

UNITED COMMAND is a military base building real time strategy game with a 2 player co-op campaign. Drop into a mission and fight side by side with a friend against the enemy AI. Use your dozer to build out your base and gather resources to fund the construction of your tanks, infantry, and aircraft.

Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.

Plunder Protocol is a unique mix of RTS, MOBA, auto battler and tower defense turned base builder. Designed for players who love strategy but hate micromanagement. Build your base, recruit units, and outsmart opponents with strategy instead of fast clicks.

A desolate realm, kept in flux by the rhythm of battle. A proving ground for those with great ambition. A Year Of Rain is the ultimate team real-time strategy game. Choose your faction, team up and take control of a legendary hero to lead your armies!

A 3D modern real-time war game, realistic 3D style, the classic RTs of the second-generation continuation of End War RTS, stimulates the fast-paced sense of attack

"Dynasty Rush" is an official Chinese-themed TD game. Command legendary heroes and unique towers across iconic Chinese landscapes. Experience deep strategy infused with rich culture as you defend the realm. The vast empire awaits your command!

A casual and relaxed strategy game that is easy to play, yet difficult to master. Counter enemy waves by building and upgrading the right units. You make the decisions, the rest happens automatically. Set in a sci-fi theme with more than 30 unique units and 70 unique upgrades to choose from!

This is a class-based tower defense game which challenges you and your Twitch viewers to work together. In Stream Defense, your viewers can play alongside you by typing commands into chat. Each viewer has full control over their character. Your viewers can even continue playing while you sleep!

Xeno Conflict is a real-time strategic survival game based on a future background, where players can control different factions compete and cooperate with each other to fight against unknown biological environments.

Take on waves of enemies alone or with friends, up to 4 players. Use a myriad of armed cats to defend yourself and customers in this tower defense style game. Keep pouring coffee and shaking eggs out of chickens as the onslaught progresses to earn extra cash!

"Godcall Defense Line" is a multiplayer cooperative game. It combines action, strategy, real - time strategy, and tower defense. Players can summon gods, ghosts, beasts, heroes, and build defenses like walls and guns to fend off continuous enemy attacks.

Choose your alchemist from a magical coven. Explore a hand-painted, post-apocalyptic fantasy world. Fend off hordes of magical beasts in this roguelite tower defense and survival game. Play solo or in co-op with up to 3 friends!

Free-to-play 4v4 War MOBA where you play as a Giant, lead an army of soldiers and deploy tactical structures known as "Battleworks" on a ravaged urban battlefield. Request access below for a chance to join future playtests

RTS, but the soldiers will act automatically: Each soldier has different characteristics/attribute values/action methods. Choose the appropriate soldiers and buildings according to the battlefield situation, and destroy the opponent's castle only through your strategy rather than operation!

Lead the Mobile Infantry in this RTS game set in the Starship Troopers film universe. Balance your army composition with a diverse set of unit types, overcome line-of-sight and line-of-fire challenges through tactical positioning, and use special abilities to smash the Arachnid hordes!

Escape from the enemies and build a fortress to face them, you can play alone or in online games of up to 4 players.

Step into the deserts of tomorrow in full VR! Command tanks, robots, and alien forces in tactical 1v1 or 2v2 RTS battles. The future shines bright, but war never ends — outsmart, outgun, and blast your enemies off the battlefield.

Enter the war-torn world of Veá, where sci-fi and fantasy collide in Liquidation, an explosive RTS of tactical combat and asymmetric factions. Lead your armies and harness powerful abilities in a high-stakes battle for quenrium, the mysterious substance that holds Veá’s fate.

The «Front edge» is a real-time multiplayer tactical game dedicated to a clash between the modern armies of the world’s leading countries. Great attention is paid to logistics and control of small groups of troops on various maps.

TLA Tactics is a real-time tactics stealth game with 3D pixel-art visuals. Command a squad of mercenaries with unique abilities to perform covert operations behind enemy lines. The first two missions will soon be released for free. Wishlist now!

Paddle Protectors is an mix of tower defense, real-time strategy and city-building. You will fight against crabs. Establish farms and factories to produce ammunition and resources, fortify your land, lead your soldiers and tanks.

What if MOBAs and RTS games had a baby? Rover Wars combines resource management, farming, building and strategy into an intense tug of war. Fight in an interplanetary campaign and challenge your friends in the configurable Battle Mode. Rover Wars might be your gateway ticket into the strategy genre.

A medieval real-time strategy game focused on castle building, medieval warfare, and economy.

Easy to learn, hard to master. A simple & free RTS game.

Just Sign! is a dynamic tower defense for 1 to 4 players. Mine, chop, refine, build turrets and refill them with ammo.

Axon TD lets you expand the map boundaries themselves. A huge arsenal of towers and a wide variety of enemies clash in a battlefield that grows to your whims. Engage in single, cooperative, and roguelite gameplay.

Are you prepared for a thrilling toy army tower defense adventure? Welcome to the Toy Shire! Battle diverse foes in various locations, defend your family, and repel foes from your area. Save the world by strengthening your defense with toy towers! FULL GAME AVAILABLE NOW!

Toy Empires is a unique fast-paced, micro-management-free real-time strategy game. All you have to do is make the purest decisions and games!