Games like Solar Scion
Games like Solar Scion include RimWorld, Prison Architect, Oxygen Not Included, Dwarf Fortress, and Escape From Duckov. We matched them by the tags players give Solar Scion on Steam (Arena Shooter, Looter Shooter, Top-Down Shooter, Twin Stick Shooter, and Colony Sim): closest matches first, and among equally close ones the better-known games.
RimWorld
Shared: Colony Sim · Base Building · Sandbox
Prison Architect
Shared: Sandbox · Colony Sim · Base Building
Oxygen Not Included
Shared: Colony Sim · Base Building · Management
Dwarf Fortress
Shared: Colony Sim · Base Building · Sandbox
Escape From Duckov
Shared: Looter Shooter · Top-Down Shooter · Shooter
Kingdoms and Castles
Shared: Colony Sim · Management · Sandbox
Timberborn
Shared: Colony Sim · Sandbox · Management
Manor Lords
Shared: Base Building · Strategy · Management
Infection Free Zone
Shared: Base Building · Management · Colony Sim
Going Medieval
Shared: Colony Sim · Base Building · Strategy
Space Haven
Shared: Colony Sim · Base Building · Sandbox
Songs of Syx
Shared: Colony Sim · Sandbox · Base Building
Empires of the Undergrowth
Shared: Base Building · Colony Sim · Strategy
Against the Storm
Shared: Base Building · Strategy · Colony Sim
Ostriv
Shared: Colony Sim · Strategy · Management
Relic Hunters Zero: Remix
Shared: Looter Shooter · Twin Stick Shooter · Top-Down Shooter
Banished
Shared: Colony Sim · Strategy · Sandbox
Workers & Resources: Soviet Republic
Shared: Base Building · Strategy · Colony Sim
Deployment
Shared: Arena Shooter · Top-Down Shooter · Twin Stick Shooter
Norland
Shared: Colony Sim · Base Building · Strategy
Noble Fates
Shared: Colony Sim · Sandbox · Base Building
Amazing Cultivation Simulator
Shared: Sandbox · Colony Sim · Strategy
Halo: Spartan Assault
Shared: Top-Down Shooter · Twin Stick Shooter · Shooter
Settlement Survival
Shared: Colony Sim · Sandbox · Management