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

Webbed
Shared: 2D Platformer · Puzzle Platformer · Cute

Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · 2D

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

Braid
Shared: Puzzle Platformer · 2D Platformer · Platformer

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

Öoo
Shared: Puzzle Platformer · 2D Platformer · Platformer

Twin Shot Deluxe
Shared: Casual · 2D Platformer · Arcade

PICO PARK
Shared: Puzzle Platformer · Casual · Cute

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

LIMBO
Shared: Puzzle Platformer · Platformer · Puzzle

KarmaZoo
Shared: Casual · 2D Platformer · Platformer

Pikuniku
Shared: Casual · Cute · Puzzle

Toki Tori
Shared: Casual · Platformer · Cute

CATO: Buttered Cat
Shared: Puzzle Platformer · Cute · Platformer

Celeste
Shared: 2D Platformer · Platformer · 2D

Brawlhalla
Shared: 2D Platformer · Casual · Platformer

BattleBlock Theater®
Shared: Platformer · 2D · 2D Platformer

Portal 2
Shared: Platformer · Puzzle Platformer · Puzzle

FEZ
Shared: Platformer · Puzzle · Casual

Zup!
Shared: Casual · Puzzle · 2D

Sonic Origins
Shared: 2D Platformer · Action · Platformer

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

Munin
Shared: Puzzle Platformer · Casual · Platformer

Trine Enchanted Edition
Shared: Puzzle Platformer · 2D Platformer · Fantasy