Games like Mechabellum
Games like Mechabellum include Legion TD 2 - Multiplayer Tower Defense, Company of Heroes 2, Company of Heroes 3, BattleTech, and Broken Arrow. We matched them by the tags players give Mechabellum on Steam (Auto Battler, Mechs, Strategy, Wargame, and Robots): closest matches first, and among equally close ones the better-known games.

Legion TD 2 - Multiplayer Tower Defense
Shared: Auto Battler · Strategy · Multiplayer

Company of Heroes 2
Shared: Strategy · Tactical · Multiplayer

Company of Heroes 3
Shared: Strategy · Wargame · Multiplayer

BattleTech
Shared: Mechs · Strategy · Tactical

Broken Arrow
Shared: Strategy · Wargame · RTS

Planetary Annihilation: TITANS
Shared: Strategy · RTS · Multiplayer

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

Squad
Shared: PvP · Multiplayer · Tactical

Wargame: Red Dragon
Shared: Strategy · Wargame · RTS

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

PUBG: BATTLEGROUNDS
Shared: Multiplayer · PvP · Tactical

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

Iron Harvest
Shared: Strategy · Mechs · RTS

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

Supreme Commander: Forged Alliance
Shared: Strategy · RTS · Multiplayer

Supreme Commander 2
Shared: Strategy · Robots · RTS

Sid Meier’s Civilization® VI
Shared: Strategy · Multiplayer · Tactical

Backpack Battles
Shared: Auto Battler · Strategy · PvP

Warhammer 40,000: Dawn of War III
Shared: Strategy · RTS · Multiplayer

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

Sins of a Solar Empire II
Shared: Strategy · RTS · Tactical

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

Mecha BREAK
Shared: Mechs · Robots · PvP

Steel Division 2
Shared: Strategy · RTS · Tactical