Games like Palallel
Games like Palallel include Human Fall Flat, Cuphead, Pikuniku, Broforce, and It Takes Two. We matched them by the tags players give Palallel on Steam (2D, Puzzle, Platformer, Logic, and Multiplayer): closest matches first, and among equally close ones the better-known games.

Human Fall Flat
Shared: Co-op · Puzzle · Multiplayer

Cuphead
Shared: Co-op · Platformer · 2D

Pikuniku
Shared: Puzzle · Indie · Co-op

Broforce
Shared: Co-op · 2D · Platformer

It Takes Two
Shared: Co-op · Multiplayer · Puzzle

PICO PARK
Shared: Co-op · Multiplayer · 2D

BattleBlock Theater®
Shared: Co-op · Platformer · 2D

ibb & obb
Shared: Co-op · Puzzle · Platformer

PEAK
Shared: Co-op · Multiplayer · Physics

LIMBO
Shared: Puzzle · Platformer · 2D

Terraria
Shared: 2D · Multiplayer · Co-op

BADLAND: Game of the Year Edition
Shared: 2D · Indie · Co-op

Chained Together
Shared: Co-op · Platformer · Multiplayer

Webbed
Shared: 2D · Platformer · Physics

Portal 2
Shared: Puzzle · Platformer · Co-op

Awesomenauts
Shared: 2D · Platformer · Multiplayer

Unravel Two
Shared: Co-op · Puzzle · Multiplayer

Trine 2: Complete Story
Shared: Platformer · Co-op · Puzzle

How to Fish
Shared: Co-op · Multiplayer · Indie

Unravel
Shared: Puzzle · Co-op · Platformer

Don't Starve Together
Shared: Co-op · Multiplayer · 2D

Little Nightmares III
Shared: Co-op · Puzzle · Multiplayer

BEEP
Shared: 2D · Platformer · Indie

Hollow Knight
Shared: Platformer · 2D · Indie