Games like Fantahouse
Games like Fantahouse include Refunct, Portal 2, A Story About My Uncle, Chained Together, and Portal. We matched them by the tags players give Fantahouse on Steam (Adventure, Platformer, Casual, Puzzle Platformer, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Refunct
Shared: 3D Platformer · Parkour · Puzzle Platformer

Portal 2
Shared: Platformer · First-Person · Singleplayer

A Story About My Uncle
Shared: Adventure · First-Person · Platformer

Chained Together
Shared: Adventure · Platformer · Casual

Portal
Shared: Puzzle Platformer · 3D Platformer · First-Person

Climb The Backrooms
Shared: Adventure · Platformer · Casual

VHOLUME
Shared: Platformer · Parkour · 3D Platformer

LIMBO
Shared: Puzzle Platformer · Platformer · Adventure

White Knuckle
Shared: Platformer · Parkour · First-Person

Slime Rancher 2
Shared: Adventure · First-Person · Singleplayer

Climber Animals: Together
Shared: Platformer · Casual · Puzzle Platformer

Sonic Adventure DX
Shared: Platformer · Adventure · 3D Platformer

Lorn's Lure
Shared: Parkour · 3D Platformer · Adventure

Mirror's Edge™
Shared: Parkour · First-Person · 3D Platformer

Neon White
Shared: Platformer · 3D Platformer · Parkour

Supraland
Shared: Adventure · Puzzle Platformer · First-Person

Little Nightmares
Shared: Adventure · Puzzle Platformer · Singleplayer

Mirror's Edge™ Catalyst
Shared: Parkour · 3D Platformer · First-Person

Quantum Conundrum
Shared: Puzzle Platformer · 3D Platformer · First-Person

Pseudoregalia
Shared: 3D Platformer · Platformer · Parkour

FEZ
Shared: Platformer · Adventure · Casual

Prince of Persia®: The Sands of Time
Shared: Adventure · Platformer · Parkour

Clustertruck
Shared: Parkour · 3D Platformer · First-Person

DAVE THE DIVER
Shared: Adventure · Casual · Relaxing