Games like Snowman Adventure
Games like Snowman Adventure include Chained Together, A Story About My Uncle, Kao the Kangaroo: Round 2 (2003 re-release), Portal 2, and Pumpkin Jack. We matched them by the tags players give Snowman Adventure on Steam (Indie, Casual, Adventure, 3D Platformer, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Chained Together
Shared: Adventure · Casual · Platformer

A Story About My Uncle
Shared: Adventure · Indie · Singleplayer

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Adventure · Casual · 3D Platformer

Portal 2
Shared: Singleplayer · Platformer · 3D Platformer

Pumpkin Jack
Shared: Adventure · Indie · 3D Platformer

Ratchet & Clank: Rift Apart
Shared: Adventure · 3D Platformer · Singleplayer

FEZ
Shared: Indie · Platformer · Adventure

Hollow Knight
Shared: Platformer · Indie · Singleplayer

BEEP
Shared: Indie · Adventure · Platformer

Florence
Shared: Indie · Casual · Adventure

Hollow Knight: Silksong
Shared: Indie · Singleplayer · Platformer

A Hat in Time
Shared: 3D Platformer · Indie · Adventure

GRIS
Shared: Indie · Adventure · Platformer

Sonic Frontiers
Shared: Adventure · 3D Platformer · Singleplayer

Yooka-Laylee
Shared: Indie · 3D Platformer · Adventure

Woodle Tree Adventures
Shared: Indie · Adventure · Platformer

A Short Hike
Shared: Indie · Adventure · Casual

Grow Up
Shared: Adventure · Casual · Indie

Pikuniku
Shared: Indie · Casual · Adventure

Ori and the Will of the Wisps
Shared: Platformer · Singleplayer · Adventure

Nihilumbra
Shared: Indie · Adventure · Casual

Getting Over It with Bennett Foddy
Shared: Singleplayer · Indie · Platformer

LIMBO
Shared: Indie · Platformer · Adventure

Melvor Idle
Shared: Casual · Indie · Adventure