Games like Dreamlight
Games like Dreamlight include Terraria, Starbound, SANABI, Sonic Origins, and The Forest. We matched them by the tags players give Dreamlight on Steam (Casual, Adventure, Action, Exploration, and Platformer): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Sandbox · Adventure · Exploration

Starbound
Shared: Adventure · Sandbox · Exploration

SANABI
Shared: Action · Adventure · 2D Platformer

Sonic Origins
Shared: Action · Adventure · Casual

The Forest
Shared: Adventure · Action · Building

DAVE THE DIVER
Shared: Casual · Adventure · Exploration

Portal Knights
Shared: Adventure · Sandbox · Building

Rain World
Shared: Exploration · Platformer · Adventure

Forager
Shared: Adventure · Sandbox · Pixel Graphics

Core Keeper
Shared: Exploration · Sandbox · Action

Thank Goodness You're Here!
Shared: Adventure · Casual · Exploration

Keplerth
Shared: Adventure · Exploration · Sandbox

Hollow Knight
Shared: Platformer · Exploration · Adventure

Slime Rancher
Shared: Adventure · Exploration · Casual

Broforce
Shared: Action · Platformer · Pixel Graphics

Webbed
Shared: 2D Platformer · Exploration · Platformer

Momodora: Reverie Under The Moonlight
Shared: Exploration · 2D Platformer · Side Scroller

FEZ
Shared: Platformer · Exploration · Adventure

LEGO® Worlds
Shared: Adventure · Sandbox · Building

Growtopia
Shared: Casual · Adventure · Exploration

Dungeon Munchies
Shared: Action · Adventure · Pixel Graphics

Dust: An Elysian Tail
Shared: Action · Platformer · Adventure

Skul: The Hero Slayer
Shared: Action · Platformer · Pixel Graphics

Sonic Superstars
Shared: Action · Adventure · Casual