Games like Deathplane
Games like Deathplane include Braid, LIMBO, Webbed, Planet of Lana, and Defy Gravity Extended. We matched them by the tags players give Deathplane on Steam (Casual, Puzzle Platformer, Platformer, 2D Platformer, and Relaxing): closest matches first, and among equally close ones the better-known games.

Braid
Shared: Puzzle Platformer · 2D Platformer · Platformer

LIMBO
Shared: Puzzle Platformer · Platformer · Puzzle

Webbed
Shared: 2D Platformer · Puzzle Platformer · Platformer

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

Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · Puzzle

FEZ
Shared: Platformer · Puzzle · Casual

Pizza Tower
Shared: 2D Platformer · Platformer · Cartoony

Portal 2
Shared: Platformer · Puzzle · Puzzle Platformer

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

Zup! S
Shared: Casual · Puzzle · Relaxing

Celeste
Shared: Platformer · 2D Platformer · Pixel Graphics

SANABI
Shared: 2D Platformer · Action · 2D

Moonleap
Shared: Puzzle Platformer · Platformer · Puzzle

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

Zup!
Shared: Casual · Puzzle · 2D

KarmaZoo
Shared: Casual · Platformer · Puzzle Platformer

Zup! 2
Shared: Casual · Puzzle · 2D

ANIMAL WELL
Shared: Puzzle Platformer · Platformer · Puzzle

Laughing to Die
Shared: Casual · Platformer · 2D Platformer

Öoo
Shared: Puzzle Platformer · 2D Platformer · Puzzle

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

The Pedestrian
Shared: Puzzle Platformer · Puzzle · Platformer

PICO PARK
Shared: Puzzle Platformer · Casual · Platformer

Zup! 3
Shared: Casual · Puzzle · 2D