Games like Up to the Unknown
Games like Up to the Unknown include Celeste, SANABI, Rain World, FEZ, and Hollow Knight. We matched them by the tags players give Up to the Unknown on Steam (Adventure, 2D Platformer, Pixel Graphics, Platformer, and Parkour): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Pixel Graphics · 2D Platformer · Platformer

SANABI
Shared: Pixel Graphics · 2D Platformer · Adventure

Rain World
Shared: Pixel Graphics · Exploration · Platformer

FEZ
Shared: Platformer · Pixel Graphics · Adventure

Hollow Knight
Shared: Platformer · Adventure · Singleplayer

DAVE THE DIVER
Shared: Pixel Graphics · Adventure · Exploration

Webbed
Shared: 2D Platformer · Pixel Graphics · Exploration

VVVVVV
Shared: Pixel Graphics · Platformer · 2D Platformer

Terraria
Shared: Adventure · Pixel Graphics · 2D

Reventure
Shared: Adventure · Pixel Graphics · Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Pixel Graphics

Super Meat Boy
Shared: Platformer · 2D Platformer · Pixel Graphics

Hollow Knight: Silksong
Shared: Platformer · Adventure · Singleplayer

Katana ZERO
Shared: Pixel Graphics · Platformer · 2D Platformer

Dead Cells
Shared: Adventure · Pixel Graphics · 2D

Sonic Origins
Shared: 2D Platformer · Adventure · Pixel Graphics

Thank Goodness You're Here!
Shared: Adventure · 2D Platformer · Exploration

ANIMAL WELL
Shared: Pixel Graphics · Exploration · Platformer

Owlboy
Shared: Adventure · Pixel Graphics · Platformer

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · Platformer · Adventure

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Pixel Graphics · Exploration

Five Nights at Freddy's: Into the Pit
Shared: Adventure · Pixel Graphics · Exploration

Rise of the Tomb Raider™
Shared: Adventure · Singleplayer · Exploration

The Escapists
Shared: Pixel Graphics · Strategy · Singleplayer