Slipways Classic
Build a vast interstellar empire in 30 minutes flat.
Unciv
Open source 4X civilization-building game
Remnants of the Precursors
modernization of the original Master of Orion
Tidehold
Expand your underwater colony. Ludum Dare 57 entry
Hero Generations
If every step was one year of your life, which path would you take?
PELAGIUM origins
straightforward turn-based strategy
Solus Sector: Tactics
Turn-based space strategy game
Slipways
Weave isolated planets into a vast trade empire. Enjoy the depth of a space grand strategy game in 60 minutes flat.
Dominus Galaxia: KS Edition
4X space strategy with tactical combat, spiritual sequel to Master of Orion.
Rush for the Ages ⏳
Fast civilizational card game
Cardalaxy
A 4x inspired card upgrading game
Antihero First Access by Versus Evil
Fast-paced strategy with an (Oliver) Twist. Bribe, blackmail, and assassinate your opposition.
Rixas
Rixas - A free and complex 4x game
Birth of the Empires
A 4x Turn Based strategy game similar to classics like Master of Orion 2 or Birth of the Federation
Empyrean Frontier
Singleplayer RTS game with procedural campaign
Rebuild 3: Gangs of Deadsville
Rebuild a ruined city in this post-apocalyptic mix of strategy and simulation.
UNITE
A tiny town conquest game (20 min)
Unending Galaxy
2D space-sim in which you can fill any role from pilot to empire leader.
Empires in Ruins
The most offensive defensive Grand Strategy game around.
Island Gods
A tiny strategy game made in pico-8
Necromation
The crypt must grow!