Games like Super Dungeon Maker
Games like Super Dungeon Maker include Terraria, Noita, 鬼谷八荒 Tale of Immortal, Graveyard Keeper, and Stardew Valley. We matched them by the tags players give Super Dungeon Maker on Steam (Colorful, Choose Your Own Adventure, Sandbox, Pixel Graphics, and Dungeon Crawler): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Sandbox · Pixel Graphics · 2D

Noita
Shared: Pixel Graphics · Sandbox · Dungeon Crawler

鬼谷八荒 Tale of Immortal
Shared: Sandbox · Choose Your Own Adventure · RPG

Graveyard Keeper
Shared: Pixel Graphics · Sandbox · RPG

Stardew Valley
Shared: Pixel Graphics · RPG · Sandbox

People Playground
Shared: Sandbox · 2D · Pixel Graphics

UnderMine
Shared: Pixel Graphics · Dungeon Crawler · RPG

Forager
Shared: Pixel Graphics · Sandbox · 2D

Hyper Light Drifter
Shared: Pixel Graphics · Action · Colorful

Geometry Dash
Shared: Level Editor · Colorful · 2D

Planet Centauri
Shared: Sandbox · Colorful · Pixel Graphics

Necesse
Shared: Pixel Graphics · Sandbox · RPG

Portal Knights
Shared: Sandbox · Building · RPG

The Slormancer
Shared: Dungeon Crawler · Pixel Graphics · RPG

The Escapists
Shared: Pixel Graphics · 2D · Action

A Dance of Fire and Ice
Shared: Level Editor · Colorful · 2D

Hammerwatch
Shared: Dungeon Crawler · Pixel Graphics · RPG

Starbound
Shared: Sandbox · Pixel Graphics · Adventure

SUMMERHOUSE
Shared: Sandbox · Colorful · Pixel Graphics

Minecraft Dungeons
Shared: Dungeon Crawler · RPG · Action

Stoneshard
Shared: Pixel Graphics · RPG · Dungeon Crawler

OMORI
Shared: Pixel Graphics · Colorful · RPG

Minecraft Dungeons II
Shared: Dungeon Crawler · Action · RPG

Core Keeper
Shared: Pixel Graphics · Sandbox · Building