Games like Operation: Polygon Storm
Games like Operation: Polygon Storm include Broken Arrow, Company of Heroes 3, Bad North: Jotunn Edition, Wargame: Red Dragon, and Starship Troopers: Terran Command. We matched them by the tags players give Operation: Polygon Storm on Steam (Action RTS, Wargame, Auto Battler, Roguelite, and Tower Defense): closest matches first, and among equally close ones the better-known games.

Broken Arrow
Shared: Wargame · Action RTS · Strategy

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

Bad North: Jotunn Edition
Shared: Wargame · Tower Defense · Real Time Tactics

Wargame: Red Dragon
Shared: Wargame · RTS · Strategy

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

WARNO
Shared: Wargame · Real Time Tactics · RTS

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

Warpips
Shared: Auto Battler · Tower Defense · Strategy

Creeper World 4
Shared: Wargame · Tower Defense · Real Time Tactics

Wargame: Airland Battle
Shared: Wargame · RTS · Strategy

Company of Heroes 3: Final Stand
Shared: Wargame · Action RTS · Roguelite

Steel Division 2
Shared: RTS · Strategy · Wargame

Tower Dominion
Shared: Tower Defense · Strategy · Roguelite

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

Master of Command
Shared: Strategy · RTS · Wargame

Mechabellum
Shared: Auto Battler · Wargame · Strategy

Wargame: European Escalation
Shared: Wargame · RTS · Strategy

Syrian Warfare
Shared: Wargame · Real Time Tactics · RTS

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

Northend Tower Defense
Shared: Tower Defense · Auto Battler · Action RTS

There Are No Orcs
Shared: Auto Battler · Tower Defense · RTS

9-Bit Armies: A Bit Too Far
Shared: Action RTS · Wargame · RTS

Line War
Shared: Action RTS · Auto Battler · RTS

Ultimate Epic Battle Simulator 2
Shared: Wargame · Strategy · Simulation