Games like Wonder World
Games like Wonder World include WARNO, Broken Arrow, Wargame: Red Dragon, Total War: WARHAMMER II, and Total War: WARHAMMER III. We matched them by the tags players give Wonder World on Steam (Strategy, Casual, RTS, 2D, and Wargame): closest matches first, and among equally close ones the better-known games.

WARNO
Shared: Strategy · Wargame · RTS

Broken Arrow
Shared: Strategy · RTS · Wargame

Wargame: Red Dragon
Shared: Strategy · RTS · Wargame

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

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

Creeper World 4
Shared: RTS · Wargame · Real Time Tactics

Kingdom Heroes 8
Shared: RTS · Strategy · Real Time Tactics

Company of Heroes 3
Shared: Strategy · RTS · Wargame

Circle Empires
Shared: Strategy · Casual · RTS

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

Plebby Quest: The Crusades
Shared: Strategy · Casual · Wargame

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

Age of History 3
Shared: Strategy · Wargame · RTS

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

Minimalist Tower Defense
Shared: Strategy · 2D · Real Time Tactics

Syrian Warfare
Shared: RTS · Real Time Tactics · Wargame

Plants vs. Zombies GOTY Edition
Shared: Strategy · Casual · 2D

Men of War: Assault Squad 2
Shared: Strategy · RTS · War

Wargame: Airland Battle
Shared: Strategy · RTS · Wargame

Master of Command
Shared: Strategy · RTS · Real Time Tactics

Kingdom Rush - Tower Defense
Shared: Strategy · 2D · Casual

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

Carrier Command 2
Shared: Strategy · RTS · Wargame

Regiments
Shared: Strategy · Wargame · RTS