FreeCiv - Freeciv is an open-source, turn-based strategy game based on Civilization II.

Endless Space - Endless Space is an Amazing, Strategy, Science-fiction, Turn-based, Space, Futuristic, Exploration, Co-op, Single and Multiplayer Space Simulation created and published by Amplitude Studios.

Sid Meier’s Civilization VI - Sid Meier’s Civilization VI is a Turn-based Strategy, War, Tactical, Single and Multiplayer video game created by Firaxis and published by 2K.

Stellaris - Stellaris is an Adventure-based, RTS (Real-time Strategy) Space, Sandbox, Sci-Fi, Single and Multiplayer video game created and published by Paradox Interactive.

C-evo - C-evo is a freeware empire building game for Windows

Sins Of A Solar Empire - Sins of a Solar Empire is an Adventure, Strategy, Real-time-strategy, Science-fiction, Exploration, Aliens, Single and Multiplayer Space Simulation developed by Ironclad Games and published by Stardock.