Get the complete GalCiv II saga including Galactic Civilizations II: Dread Lords, the expansion pack Dark Avatar, and the newest expansion pack Twilight of the Arnor!

Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.

Civilization VI offers new ways to interact with your world, expand your empire across the map, advance your culture, and compete against history’s greatest leaders to build a civilization that will stand the test of time. Play as one of 20 historical leaders including Roosevelt (America) and Victoria (England).

In Sins of a Solar Empire: Trinity, you are the leader of a civilization embroiled in a galactic war, fighting for the survival of your entire race against relentless foes.

A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.

Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.

Wingspan is a relaxing, award-winning strategy card game about birds for 1 to 5 players. Each bird you play extends a chain of powerful combinations in one of your three habitats. Your goal is to discover and attract the best birds to your network of wildlife preserves.

Cities: Skylines is a modern take on the classic city simulation. The game introduces new game play elements to realize the thrill and hardships of creating and maintaining a real city whilst expanding on some well-established tropes of the city building experience.

Frostpunk is the first society survival game. As the ruler of the last city on Earth, it is your duty to manage both its citizens and infrastructure. What decisions will you make to ensure your society's survival? What will you do when pushed to breaking point? Who will you become in the process?

Build your society of the future, colonize islands, and create sprawling megacities with multitudes of buildings, vehicles, and resources to manage.

Parkitect is a business simulation game that charges you with the construction and management of theme parks! Bringing back the best of classic theme park games with many new features and content on top. Now supports online co-op with up to 8 players!

Design stunning hospitals, cure peculiar illnesses and manage troublesome staff as you spread your budding healthcare organisation across Two Point County.

Only the world’s most ruthless Warden can contain the world’s most ruthless inmates. Design and develop your personalized penitentiary in Prison Architect.

ISLANDERS is a minimalist strategy game about building cities on colorful islands.

Would you enjoy building CASTLES, traps and siege machines in MULTIPLAYER? And then undermine your opponents castle and collapse it with 2D PHYSICS & DESTRUCTION?

Rollercoaster Tycoon 3 Platinum combines the excitement of rollercoasters with the fun of a great strategy simulation. RCT3 Platinum combines the roller coaster theme park fun of the Roller Coaster Tycoon 3 with included expansion packs Soaked! and Wild! Now enjoy more options than ever.

The original castle sim, Stronghold HD allows you to design, build and destroy historical castles. Engage in medieval warfare against the AI in one of two single player campaigns or online with up to 8 players.

Create a hero from one of four classes to save Etheria in this 4-player coop Tower Defense Action-RPG. Includes Steam exclusive Portal gun & TF2 familiars!

Microsoft Studios brings you three epic Age of Empires III games in one monumental collection for the first time.

Build a world for wildlife in Planet Zoo. From the developers of Planet Coaster and Zoo Tycoon comes the ultimate zoo sim. Construct detailed habitats, manage your zoo, and meet authentic living animals who think, feel and explore the world you create around them.