Games like Spike Mtn
Games like Spike Mtn include Celeste, Super Meat Boy, Geometry Dash, VVVVVV, and Downwell. We matched them by the tags players give Spike Mtn on Steam (2D Platformer, Precision Platformer, Casual, Difficult, and Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

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

Geometry Dash
Shared: Difficult · Precision Platformer · Platformer

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

Downwell
Shared: Precision Platformer · 2D Platformer · Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Jump King
Shared: Precision Platformer · Difficult · Platformer

SANABI
Shared: 2D Platformer · Platformer · Pixel Graphics

Rain World
Shared: Difficult · Platformer · 2D Platformer

Thomas Was Alone
Shared: 2D Platformer · Platformer · Precision Platformer

Alex Kidd in Miracle World DX
Shared: 2D Platformer · Precision Platformer · Difficult

Ambidextro
Shared: Precision Platformer · 2D Platformer · Platformer

Hollow Knight
Shared: Platformer · Difficult · Indie

Webbed
Shared: 2D Platformer · Physics · Platformer

Getting Over It with Bennett Foddy
Shared: Difficult · Physics · Platformer

The Messenger
Shared: Platformer · Retro · 2D Platformer

Cuphead
Shared: Difficult · Platformer · 2D

Kaze and the Wild Masks
Shared: Casual · Precision Platformer · Difficult

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

Katana ZERO
Shared: 2D Platformer · Platformer · Pixel Graphics

Hollow Knight: Silksong
Shared: Difficult · Platformer · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · Retro · Difficult

Braid
Shared: 2D Platformer · Platformer · Difficult

Noita
Shared: Difficult · Physics · Pixel Graphics