Games like The Red Solstice
Games like The Red Solstice include Warhammer 40,000: Dawn of War II - Anniversary Edition (Classic), Company of Heroes 2, Aliens: Dark Descent, Warhammer 40,000: Dawn of War - Definitive Edition, and Battlefleet Gothic: Armada 2. We matched them by the tags players give The Red Solstice on Steam (Strategy, Tactical, RTS, Sci-fi, and Aliens): closest matches first, and among equally close ones the better-known games.

Warhammer 40,000: Dawn of War II - Anniversary Edition (Classic)
Shared: Strategy · RTS · Sci-fi

Company of Heroes 2
Shared: Strategy · RTS · Tactical

Aliens: Dark Descent
Shared: Strategy · Tactical · RTS

Warhammer 40,000: Dawn of War - Definitive Edition
Shared: Strategy · RTS · Sci-fi

Battlefleet Gothic: Armada 2
Shared: Strategy · RTS · Sci-fi

STAR WARS™ Empire at War - Gold Pack
Shared: Strategy · RTS · Sci-fi

Supreme Commander: Forged Alliance
Shared: Strategy · RTS · Sci-fi

Planetary Annihilation: TITANS
Shared: Strategy · RTS · Sci-fi

Warhammer 40,000: Dawn of War III
Shared: Strategy · RTS · Sci-fi

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

XCOM: Enemy Unknown
Shared: Tactical · Strategy · Sci-fi

Halo Wars: Definitive Edition
Shared: Strategy · RTS · Sci-fi

Battlefleet Gothic: Armada (Classic)
Shared: Strategy · RTS · Sci-fi

Starship Troopers: Terran Command
Shared: Strategy · RTS · Tactical

Homeworld 3
Shared: Strategy · RTS · Sci-fi

Total War: WARHAMMER III
Shared: Strategy · RTS · Real Time Tactics

Company of Heroes 3
Shared: Strategy · RTS · Singleplayer

Warhammer 40,000: Dawn of War - Anniversary Edition (Classic)
Shared: Strategy · RTS · Sci-fi

Sins of a Solar Empire II
Shared: Strategy · RTS · Sci-fi

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

Supreme Commander 2
Shared: Strategy · RTS · Sci-fi

Total War: ROME II - Emperor Edition
Shared: Strategy · Tactical · RTS

Bloons TD 6
Shared: Strategy · Co-op · Singleplayer

Total War: THREE KINGDOMS
Shared: Strategy · RTS · Tactical