Games like Supreme Commander 2
Games like Supreme Commander 2 include Supreme Commander: Forged Alliance, Halo Wars: Definitive Edition, Company of Heroes 2, Planetary Annihilation: TITANS, and Warhammer 40,000: Dawn of War III. We matched them by the tags players give Supreme Commander 2 on Steam (Strategy, RTS, Sci-fi, Multiplayer, and Base Building): closest matches first, and among equally close ones the better-known games.

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

Halo Wars: Definitive Edition
Shared: Strategy · RTS · Multiplayer

Company of Heroes 2
Shared: Strategy · RTS · Multiplayer

Planetary Annihilation: TITANS
Shared: Strategy · RTS · Multiplayer

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

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

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

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

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

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

Hearts of Iron IV
Shared: Strategy · Multiplayer · Grand Strategy

Supreme Commander
Shared: Strategy · RTS · Sci-fi

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

Command & Conquer™ Red Alert™ 3
Shared: Strategy · RTS · Base Building

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

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

Iron Harvest
Shared: Strategy · RTS · Base Building

Age of Empires: Definitive Edition
Shared: Strategy · RTS · Multiplayer

Company of Heroes
Shared: Strategy · RTS · Multiplayer

Call to Arms
Shared: Strategy · RTS · Multiplayer

Tempest Rising
Shared: Strategy · RTS · Base Building

Command & Conquer Red Alert™ 2 and Yuri’s Revenge™
Shared: Strategy · RTS · Multiplayer

Command & Conquer™ Remastered Collection
Shared: Strategy · RTS · Multiplayer

Total War: WARHAMMER III
Shared: Strategy · RTS · Grand Strategy