Games like Stoney's Adventure
Games like Stoney's Adventure include SANABI, Portal 2, Ori and the Will of the Wisps, Pizza Tower, and Celeste. We matched them by the tags players give Stoney's Adventure on Steam (Action-Adventure, Platformer, Singleplayer, Nonlinear, and Action): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · Singleplayer · Action-Adventure

Portal 2
Shared: Platformer · Singleplayer · Puzzle Platformer

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

Pizza Tower
Shared: Platformer · 2D Platformer · Singleplayer

Celeste
Shared: Platformer · Singleplayer · 2D Platformer

Phoenotopia: Awakening
Shared: Platformer · Action · Singleplayer

Darwin's Paradox!
Shared: Action-Adventure · Platformer · Action

Trine Enchanted Edition
Shared: Action-Adventure · Puzzle Platformer · 2D Platformer

Rogue Legacy 2
Shared: Platformer · Arcade · Action

Trine 2: Complete Story
Shared: Action-Adventure · Platformer · Puzzle Platformer

Skul: The Hero Slayer
Shared: Action · Singleplayer · Platformer

Webbed
Shared: Platformer · Puzzle Platformer · 2D Platformer

Trine 5: A Clockwork Conspiracy
Shared: Platformer · Action-Adventure · Action

Shovel Knight: Treasure Trove
Shared: Platformer · Action · Singleplayer

BlazBlue Entropy Effect
Shared: Action-Adventure · Platformer · Action

Owlboy
Shared: Platformer · Adventure · Action

ANTONBLAST
Shared: Singleplayer · Action · 2D Platformer

Sonic Superstars
Shared: Platformer · Action · Action-Adventure

Hollow Knight
Shared: Platformer · Singleplayer · 2D

Planet of Lana
Shared: Action · Puzzle Platformer · Singleplayer

Sonic Mania
Shared: Platformer · 2D · Action

Constance
Shared: Platformer · Action-Adventure · Action

Ratchet & Clank: Rift Apart
Shared: Singleplayer · Action-Adventure · Adventure

LIMBO
Shared: Platformer · Puzzle Platformer · Singleplayer