Games like Life Is Not The End!
Games like Life Is Not The End! include Celeste, Super Meat Boy, Braid, Geometry Dash, and LIMBO. We matched them by the tags players give Life Is Not The End! on Steam (Precision Platformer, 2D Platformer, Puzzle Platformer, Puzzle, and Perma Death): 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

Braid
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Geometry Dash
Shared: Difficult · Precision Platformer · 2D

LIMBO
Shared: Puzzle Platformer · Puzzle · Platformer

Downwell
Shared: Precision Platformer · 2D Platformer · Platformer

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

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

Öoo
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Webbed
Shared: 2D Platformer · Puzzle Platformer · Platformer

Defy Gravity Extended
Shared: Puzzle Platformer · Puzzle · Platformer

Moonleap
Shared: Puzzle Platformer · Puzzle · Platformer

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

Spelunky 2
Shared: 2D Platformer · Platformer · Difficult

FEZ
Shared: Puzzle · Platformer · Puzzle Platformer

Trine 2: Complete Story
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Baba Is You
Shared: Puzzle · Difficult · Indie

Squishy the Suicidal Pig
Shared: Puzzle Platformer · Puzzle · Platformer

Zup! S
Shared: Puzzle · 2D · Casual

LYNE
Shared: Puzzle · Difficult · Relaxing

The Pedestrian
Shared: Puzzle Platformer · Puzzle · 2D Platformer

Zup!
Shared: Puzzle · Puzzle Platformer · 2D

ANIMAL WELL
Shared: Puzzle · Puzzle Platformer · Platformer

ElecHead
Shared: Puzzle Platformer · Puzzle · Platformer