Games like Sigma Theory: Global Cold War

In "Heart of the Machine," players control a powerful sentient Machine Intelligence in a turn-based sci-fi 4X RPG, with the ability to shape the world and story based on their choices. With various tools and objectives, players can decide the fate of humanity, ranging from benevolent leader to ruthless dictator, while managing resources and overcoming obstacles. The game is set in a post-apocalyptic Earth, where players must make strategic decisions to achieve their goals.

Tharsis is a single-player horror turn-based strategy game set on a doomed Mars mission struck by a micrometeoroid storm. Players navigate disasters, dwindling resources, and psychological strain while unraveling a mysterious signal that may hold humanity’s survival key. Featuring excellent mechanics, a dense atmosphere, humor, and replayability, it delivers a gripping, strategic experience.

"Phantom Doctrine" is a turn-based strategy game with espionage elements, set in the Cold War era. As the leader of a covert agency, you'll need to manage resources, recruit agents, and carry out missions to uncover a global conspiracy. The game features a rich narrative, strategic combat, and a variety of customization options for your agents. A Deluxe Edition is available, including a digital soundtrack and artbook. An official manual is also available to help you understand the game's mechanics.

In Terra Invicta, players lead one of several factions responding to an extraterrestrial probe and alien presence mining beyond Earth. As global nations falter, secret coalitions form with competing goals—defense, extermination, worship, negotiation, or alliance with the aliens. Strategic diplomacy, resource management, and covert operations shape humanity’s fate amid an uncertain invasion.

Deep Sky Derelicts is a strategic, turn-based RPG set in a grim, dieselpunk universe. Scavenge for resources, explore derelict spaceships, and engage in tactical combat with pirates and factions. Manage your crew, equip them with upgrades, and level up their skills to survive in this unforgiving, procedurally generated world.

Epic Manager is a unique blend of RPG management simulation. Run your own adventuring agency, recruit heroes, send them on quests, and manage their equipment, skills, and personalities. Navigate the political landscape of rival agencies and make strategic decisions to outsmart them. Build your reputation, level up your agency, and become candide for the ultimate title of Epic Manager.

Into the Breach is a turn-based strategy game where players defend Earth from an alien invasion. Command powerful mechs to protect cities and defeat the Vek threat in this tactical battlefield. Each decision matters as failed missions can result in global consequences, and only the most strategic pilots will ensure humanity's survival.

"Dead In Bermuda" is a survival management game where players guide a group of shipwrecked survivors on a mysterious island. The game combines exploration, crafting, and character development, as players manage resources, build shelter, and make critical decisions to ensure their group's survival. With permadeath, time management, and challenging scenarios, each playthrough is a unique experience.

"Dungeon of the ENDLESS™ is a rogue-like dungeon-defense game where players manage resources, explore levels, and battle enemies to survive. The Crystal Edition includes the 'Bookworm' add-on, original soundtrack, and exclusive badge for Games2Gether accounts. Players colonize the planet Auriga Prime, uncovering its mysterious past while defending their shipment of condemned criminals."

"Dice Legacy" is a roguelike survival city builder where you lead your realm by rolling dice. Your dice represent your subjects, and you must keep them happy and healthy by gathering resources and constructing buildings. The procedurally generated ringworld presents new challenges and opportunities in each playthrough, and you must adapt your strategy to test your luck against enigmatic factions and a mysterious darkness lurking beyond.