Games like SkyInFlames
Games like SkyInFlames include Broken Arrow, WARNO, Wargame: Red Dragon, Foxhole, and Company of Heroes 3. We matched them by the tags players give SkyInFlames on Steam (Time Management, Wargame, Real Time Tactics, Strategy, and Sandbox): closest matches first, and among equally close ones the better-known games.

Broken Arrow
Shared: Wargame · Strategy · Real Time Tactics

WARNO
Shared: Wargame · Real Time Tactics · Strategy

Wargame: Red Dragon
Shared: Strategy · Wargame · Military

Foxhole
Shared: Wargame · Military · Sandbox

Company of Heroes 3
Shared: Wargame · Strategy · Real Time Tactics

Total War: THREE KINGDOMS
Shared: Strategy · War · Military

Men of War: Assault Squad 2
Shared: Strategy · War · Real Time Tactics

Call to Arms - Gates of Hell: Ostfront
Shared: Real Time Tactics · Strategy · War

Wargame: Airland Battle
Shared: Strategy · Wargame · Real Time Tactics

Hearts of Iron IV
Shared: Strategy · War · Military

Squad
Shared: Military · PvP · Wargame

Ultimate General: Civil War
Shared: Wargame · Real Time Tactics · War

Arma Reforger
Shared: Military · Strategy · Sandbox

Steel Division 2
Shared: Strategy · War · Military

Starship Troopers: Terran Command
Shared: Strategy · Military · War

Stronghold Crusader HD (2012)
Shared: Real Time Tactics · Military · Strategy

Wargame: European Escalation
Shared: Strategy · Wargame · Military

Steel Division: Normandy 44
Shared: Strategy · Military · Wargame

Totally Accurate Battle Simulator
Shared: Sandbox · Strategy · War

Call to Arms
Shared: Strategy · Military · War

Company of Heroes 2
Shared: Strategy · War · Military

Blitzkrieg 3
Shared: Strategy · Real Time Tactics · War

Syrian Warfare
Shared: Real Time Tactics · Wargame · Military

Total War: WARHAMMER II
Shared: Strategy · War · RTS