Games like Alone
Games like Alone include Super Meat Boy, Celeste, Brawlhalla, SANABI, and Sonic Superstars. We matched them by the tags players give Alone on Steam (Precision Platformer, Action, Casual, 2D Platformer, and PvE): closest matches first, and among equally close ones the better-known games.

Super Meat Boy
Shared: Precision Platformer · Platformer · 2D Platformer

Celeste
Shared: Precision Platformer · 2D Platformer · Platformer

Brawlhalla
Shared: 2D Platformer · Casual · Platformer

SANABI
Shared: Action · 2D Platformer · Adventure

Sonic Superstars
Shared: Action · 2D Platformer · Casual

Sonic Origins
Shared: Action · 2D Platformer · Adventure

Downwell
Shared: Precision Platformer · Action · Platformer

Prince of Persia The Lost Crown
Shared: Action · 2D Platformer · Precision Platformer

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

Dust: An Elysian Tail
Shared: Action · Platformer · Adventure

Planet of Lana
Shared: Action · 2D Platformer · Platformer

Super Fancy Pants Adventure
Shared: Action · Casual · Adventure

Janosik
Shared: Action · Casual · 2D Platformer

The End Is Nigh
Shared: Precision Platformer · Platformer · Action

DuckTales: Remastered
Shared: Action · Platformer · Casual

Jump King
Shared: Precision Platformer · Action · Platformer

Dungeon Escape
Shared: Precision Platformer · 2D Platformer · Action

Rayman® Legends
Shared: Action · Platformer · Adventure

Minimalism
Shared: Action · Casual · Platformer

A Difficult Game About Climbing
Shared: Precision Platformer · Action · Adventure

Geometry Dash
Shared: Precision Platformer · 2D · Platformer

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

Warhammer 40,000: Space Marine 2
Shared: Action · PvE · Adventure

Katana ZERO
Shared: Action · Platformer · 2D Platformer