Games like Proton & Electron
Games like Proton & Electron include Webbed, Öoo, ANIMAL WELL, FEZ, and Leap Year. We matched them by the tags players give Proton & Electron on Steam (Exploration, 2D Platformer, Puzzle Platformer, Puzzle, and Platformer): closest matches first, and among equally close ones the better-known games.

Webbed
Shared: 2D Platformer · Exploration · Puzzle Platformer

Öoo
Shared: Puzzle Platformer · 2D Platformer · Exploration

ANIMAL WELL
Shared: Exploration · Puzzle · Puzzle Platformer

FEZ
Shared: Puzzle · Exploration · Platformer

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

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

LIMBO
Shared: Puzzle Platformer · Puzzle · Platformer

Mind Over Magnet
Shared: Puzzle Platformer · Puzzle · 2D Platformer

Braid
Shared: Puzzle Platformer · 2D Platformer · Puzzle

ElecHead
Shared: Puzzle Platformer · Puzzle · Platformer

Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · Puzzle

ANTONBLAST
Shared: 2D Platformer · 2D · Exploration

Portal 2
Shared: Puzzle · Platformer · Puzzle Platformer

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

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

Out There Somewhere
Shared: Platformer · Puzzle · 2D

Celeste
Shared: 2D Platformer · Platformer · Pixel Graphics

SANABI
Shared: 2D Platformer · Action · Pixel Graphics

Rain World
Shared: Exploration · Platformer · 2D

Hollow Knight
Shared: Platformer · Exploration · 2D

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

Moonleap
Shared: Puzzle Platformer · Puzzle · Platformer

COCOON
Shared: Exploration · Puzzle · Puzzle Platformer

VVVVVV
Shared: 2D Platformer · Platformer · Exploration