Games like Doodle God
Games like Doodle God include Reus, Potion Craft: Alchemist Simulator, Goat Simulator, There Is No Game: Wrong Dimension, and Slime Rancher. We matched them by the tags players give Doodle God on Steam (Indie, Casual, Puzzle, God Game, and Simulation): closest matches first, and among equally close ones the better-known games.

Reus
Shared: Indie · God Game · Simulation

Potion Craft: Alchemist Simulator
Shared: Crafting · Indie · Simulation

Goat Simulator
Shared: Simulation · Casual · Indie

There Is No Game: Wrong Dimension
Shared: Indie · Puzzle · Casual

Slime Rancher
Shared: Casual · Singleplayer · Adventure

SPORE™
Shared: God Game · Simulation · Sandbox

Game Dev Tycoon
Shared: Indie · Casual · Simulation

Mountain
Shared: Indie · Casual · Simulation

Scribblenauts Unlimited
Shared: Casual · Puzzle · Sandbox

Banana
Shared: Casual · 2D · Singleplayer

Zup! S
Shared: Casual · Indie · Puzzle

Little Inferno
Shared: Indie · Casual · Puzzle

Don't Starve
Shared: Indie · Crafting · Sandbox

People Playground
Shared: Sandbox · 2D · Simulation

Terraria
Shared: Sandbox · 2D · Crafting

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Indie

Human Fall Flat
Shared: Puzzle · Sandbox · Indie

Don't Starve Together
Shared: Crafting · Indie · Sandbox

Pikuniku
Shared: Indie · Casual · Puzzle

Stardew Valley
Shared: Simulation · Indie · Sandbox

Wobbly Life
Shared: Simulation · Casual · Sandbox

Papers, Please
Shared: Indie · Simulation · Puzzle

The Escapists
Shared: Indie · Crafting · Simulation

My Time at Portia
Shared: Casual · Simulation · Crafting