Games like Dark Ascent
Games like Dark Ascent include Celeste, Rain World, Super Meat Boy, Hollow Knight, and VVVVVV. We matched them by the tags players give Dark Ascent on Steam (Precision Platformer, Exploration, 2D Platformer, Puzzle Platformer, and Adventure): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

Rain World
Shared: Exploration · Difficult · Open World

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

Hollow Knight
Shared: Difficult · Exploration · Platformer

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

Downwell
Shared: Precision Platformer · 2D Platformer · Platformer

Hollow Knight: Silksong
Shared: Difficult · Exploration · Adventure

Webbed
Shared: 2D Platformer · Exploration · Puzzle Platformer

Leap Year
Shared: Precision Platformer · Exploration · 2D Platformer

Geometry Dash
Shared: Difficult · Precision Platformer · Platformer

Jump King
Shared: Precision Platformer · Difficult · Adventure

FEZ
Shared: Exploration · Platformer · Adventure

LIMBO
Shared: Puzzle Platformer · Adventure · Platformer

ANIMAL WELL
Shared: Exploration · Puzzle Platformer · Platformer

SANABI
Shared: 2D Platformer · Adventure · Pixel Graphics

Öoo
Shared: Puzzle Platformer · 2D Platformer · Exploration

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Exploration · Difficult

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

Braid
Shared: Puzzle Platformer · 2D Platformer · Platformer

Will You Snail?
Shared: Precision Platformer · Difficult · 2D Platformer

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

Slime Rancher
Shared: Exploration · Adventure · Open World

Haiku, the Robot
Shared: Exploration · Adventure · 2D Platformer

Chained Together
Shared: Adventure · Puzzle Platformer · Platformer