Games like Ascendance
Games like Ascendance include Stellaris, X4: Foundations, Dyson Sphere Program, STAR WARS™ Empire at War - Gold Pack, and Anno 2205™. We matched them by the tags players give Ascendance on Steam (Strategy, 4X, Grand Strategy, RTS, and Simulation): closest matches first, and among equally close ones the better-known games.
Stellaris
Shared: Strategy · Grand Strategy · 4X
X4: Foundations
Shared: Simulation · Space · 4X
Dyson Sphere Program
Shared: Space · Simulation · Automation
STAR WARS™ Empire at War - Gold Pack
Shared: Strategy · RTS · Space
Anno 2205™
Shared: Strategy · Simulation · 4X
Manor Lords
Shared: Strategy · Grand Strategy · Simulation
Dune: Spice Wars
Shared: Strategy · RTS · 4X
Europa Universalis IV
Shared: Strategy · Grand Strategy · 4X
Terra Invicta
Shared: Strategy · Grand Strategy · 4X
Crusader Kings III
Shared: Strategy · Grand Strategy · Simulation
Victoria 3
Shared: Strategy · Grand Strategy · Simulation
ENDLESS Space™ 2
Shared: Strategy · 4X · Space
Distant Worlds 2
Shared: Strategy · 4X · Grand Strategy
Galactic Civilizations IV
Shared: Grand Strategy · 4X · Strategy
Sid Meier's Civilization®: Beyond Earth™
Shared: Strategy · 4X · Space
Sins of a Solar Empire II
Shared: Strategy · 4X · RTS
Anno 2070™
Shared: Strategy · Simulation · RTS
Sid Meier’s Civilization® VI
Shared: Strategy · Grand Strategy · 4X
Sins of a Solar Empire®: Rebellion
Shared: Strategy · Simulation · Space
Europa Universalis V
Shared: Strategy · Grand Strategy · Simulation
Sid Meier's Civilization VII
Shared: Strategy · Grand Strategy · 4X
Against the Storm
Shared: Strategy · Simulation · Grand Strategy
Workers & Resources: Soviet Republic
Shared: Strategy · Grand Strategy · Simulation
NEBULOUS: Fleet Command
Shared: Strategy · Grand Strategy · Simulation