Games like Stick WW1
Games like Stick WW1 include Kingdom Rush 5: Alliance TD, Kingdom Rush Vengeance - Tower Defense, Kingdom Rush - Tower Defense, Kingdom Rush Frontiers - Tower Defense, and Plants vs. Zombies GOTY Edition. We matched them by the tags players give Stick WW1 on Steam (Strategy, Side Scroller, 2D, Cartoon, and World War I): closest matches first, and among equally close ones the better-known games.

Kingdom Rush 5: Alliance TD
Shared: Strategy · 2D · Cartoon

Kingdom Rush Vengeance - Tower Defense
Shared: Strategy · 2D · Singleplayer

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

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · 2D · Singleplayer

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

Bloons TD 6
Shared: Strategy · Singleplayer · 2D

Stickman Trenches
Shared: Strategy · Side Scroller · World War I

Warfare Legacy Collection
Shared: Strategy · Side Scroller · World War I

Your Only Move Is HUSTLE
Shared: Strategy · 2D · Side Scroller

Cuphead
Shared: Cartoon · 2D · Side Scroller

The Escapists
Shared: Strategy · 2D · Singleplayer

Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™
Shared: World War I · 2D · Singleplayer

Eastern Exorcist
Shared: Side Scroller · 2D · Strategy

Kingdom Rush Origins - Tower Defense
Shared: Strategy · 2D · Singleplayer

HoloParade
Shared: Strategy · Side Scroller · 2D

Game Dev Tycoon
Shared: Strategy · 2D · Singleplayer

Geometry Dash
Shared: 2D · Singleplayer · Side Scroller

Mark of the Ninja
Shared: 2D · Side Scroller · Singleplayer

Age of History 3
Shared: Strategy · World War I · 2D

Plague Inc: Evolved
Shared: Strategy · Singleplayer · 2D

The Escapists 2
Shared: Strategy · 2D · Singleplayer

RimWorld
Shared: Strategy · Singleplayer · 2D

Grim Nights
Shared: Strategy · 2D · Side Scroller

aMAZE 2
Shared: Side Scroller · 2D · Strategy