Games like Super Dungeon Designer
Games like Super Dungeon Designer include Minecraft Dungeons, Minecraft Dungeons II, Last Epoch, Terraria, and Wizard with a Gun. We matched them by the tags players give Super Dungeon Designer on Steam (Dungeon Crawler, Top-Down, Action-Adventure, Sandbox, and Choose Your Own Adventure): closest matches first, and among equally close ones the better-known games.

Minecraft Dungeons
Shared: Dungeon Crawler · Action-Adventure · Adventure

Minecraft Dungeons II
Shared: Dungeon Crawler · Action · Action-Adventure

Last Epoch
Shared: Top-Down · Dungeon Crawler · Action RPG

Terraria
Shared: Sandbox · Building · Adventure

Wizard with a Gun
Shared: Dungeon Crawler · Action-Adventure · Sandbox

Rust
Shared: Building · Sandbox · Adventure

Portal Knights
Shared: Sandbox · Adventure · Building

Wolcen: Lords of Mayhem
Shared: Action · Dungeon Crawler · Action RPG

Cultivation Tales
Shared: Sandbox · Building · Action

Super Dungeon Maker
Shared: Level Editor · Dungeon Crawler · Choose Your Own Adventure

Wayfinder
Shared: Dungeon Crawler · Action · Action RPG

The Slormancer
Shared: Dungeon Crawler · Action-Adventure · Top-Down

Quest Master
Shared: Level Editor · Dungeon Crawler · Action-Adventure

Black Myth: Wukong
Shared: Action · Action-Adventure · Action RPG

Black Desert
Shared: Sandbox · Action-Adventure · Action RPG

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

Romestead
Shared: Top-Down · Adventure · Cute

Torchlight II
Shared: Dungeon Crawler · Action RPG · RPG

Cult of the Lamb
Shared: Dungeon Crawler · Cute · Building

Trailmakers
Shared: Action · Action-Adventure · Adventure

Farever
Shared: Action-Adventure · Action · Adventure

Heroes of Hammerwatch II
Shared: Dungeon Crawler · Action · Action RPG

Deaths Door
Shared: Action-Adventure · Cute · Action

Path of Exile 2
Shared: Dungeon Crawler · Action RPG · Action