Games like Little Traveler
Games like Little Traveler include Portal 2, A Hat in Time, Portal, Lunistice, and Slime Rancher 2. We matched them by the tags players give Little Traveler on Steam (3D Platformer, Puzzle, Platformer, Female Protagonist, and 3D): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Puzzle · Platformer · 3D Platformer

A Hat in Time
Shared: 3D Platformer · Cute · Female Protagonist

Portal
Shared: Puzzle · 3D Platformer · Female Protagonist

Lunistice
Shared: 3D Platformer · Female Protagonist · Platformer

Slime Rancher 2
Shared: Cute · Relaxing · Female Protagonist

Pseudoregalia
Shared: 3D Platformer · Female Protagonist · Platformer

Spyro™ Reignited Trilogy
Shared: 3D Platformer · Platformer · Action

SONIC X SHADOW GENERATIONS
Shared: 3D Platformer · Platformer · Action

The Last Campfire
Shared: Puzzle · Cute · Relaxing

Tomb Raider I-III Remastered Starring Lara Croft
Shared: Female Protagonist · Action · Puzzle

Cirno! Lifts a Boulder
Shared: 3D Platformer · Platformer · Female Protagonist

Crash Bandicoot™ 4: It’s About Time
Shared: 3D Platformer · Platformer · Action

Monument Valley
Shared: Puzzle · Relaxing · Female Protagonist

Frogun
Shared: 3D Platformer · Platformer · Female Protagonist

Planet of Lana
Shared: Female Protagonist · Puzzle · Action

Tomb Raider: Legend
Shared: Female Protagonist · Puzzle · Platformer

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

Toree 3D
Shared: 3D Platformer · Platformer · 3D

Crash Bandicoot™ N. Sane Trilogy
Shared: 3D Platformer · Platformer · Action

Tomb Raider: Underworld
Shared: Female Protagonist · Puzzle · Platformer

Wavetale
Shared: 3D Platformer · Platformer · 3D

Mirror's Edge™
Shared: 3D Platformer · Female Protagonist · Platformer

Carto
Shared: Puzzle · Cute · Relaxing

Sonic Frontiers
Shared: 3D Platformer · Action · 3D