Games like Ruin or Victory
Games like Ruin or Victory include Stronghold: Definitive Edition, Age of Empires II (Retired), Stronghold Crusader HD (2012), Manor Lords, and Stronghold Crusader: Definitive Edition. We matched them by the tags players give Ruin or Victory on Steam (Action RTS, Real Time Tactics, Base Building, Strategy, and RTS): closest matches first, and among equally close ones the better-known games.

Stronghold: Definitive Edition
Shared: Real Time Tactics · Strategy · City Builder

Age of Empires II (Retired)
Shared: Strategy · RTS · Base Building

Stronghold Crusader HD (2012)
Shared: Real Time Tactics · City Builder · Base Building

Manor Lords
Shared: Strategy · Base Building · City Builder

Stronghold Crusader: Definitive Edition
Shared: Real Time Tactics · Strategy · City Builder

Age of Empires III: Definitive Edition
Shared: Base Building · Strategy · RTS

Stronghold HD (2012)
Shared: Real Time Tactics · City Builder · Base Building

Age of Darkness: Final Stand
Shared: Action RTS · Strategy · Base Building

Workers & Resources: Soviet Republic
Shared: Strategy · Base Building · City Builder

Farthest Frontier
Shared: Strategy · City Builder · Base Building

Cossacks 3
Shared: Strategy · RTS · Action RTS

Stronghold 2: Steam Edition
Shared: Real Time Tactics · City Builder · Strategy

Stronghold: Warlords
Shared: Real Time Tactics · City Builder · Strategy

Thronefall
Shared: Strategy · Action RTS · City Builder

Company of Heroes 3
Shared: Strategy · Action RTS · RTS

Medieval Kingdom Wars
Shared: Base Building · RTS · Strategy

Broken Arrow
Shared: Strategy · Real Time Tactics · Action RTS

Sudden Strike 4
Shared: Real Time Tactics · Strategy · Action RTS

Becastled
Shared: Base Building · Strategy · City Builder

Going Medieval
Shared: Base Building · Strategy · City Builder

Against the Storm
Shared: Strategy · Base Building · City Builder

Age of Empires: Definitive Edition
Shared: Strategy · RTS · Base Building

Kingdoms and Castles
Shared: City Builder · Strategy · Base Building

They Are Billions
Shared: Base Building · Strategy · RTS