Games like KOCO
Games like KOCO include Chained Together, A Difficult Game About Climbing, Kao the Kangaroo: Round 2 (2003 re-release), PRAGMATA, and Pikuniku. We matched them by the tags players give KOCO on Steam (Precision Platformer, Action, Platformer, Casual, and Relaxing): closest matches first, and among equally close ones the better-known games.

Chained Together
Shared: Platformer · Casual · Adventure

A Difficult Game About Climbing
Shared: Precision Platformer · Platformer · Adventure

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Action · Adventure · Casual

PRAGMATA
Shared: Action · Cute · Adventure

Pikuniku
Shared: Casual · Adventure · Action

Gang Beasts
Shared: Action · Funny · Casual

Ori and the Will of the Wisps
Shared: Platformer · Action · Adventure

Celeste
Shared: Precision Platformer · Platformer · Indie

Portal 2
Shared: Platformer · Funny · Singleplayer

Get To Work
Shared: Precision Platformer · Adventure · Funny

Tomb Raider Game of the Year
Shared: Action · Adventure · Third Person

Donut County
Shared: Casual · Funny · Cute

Ratchet & Clank: Rift Apart
Shared: Adventure · Action · Action-Adventure

Marvel’s Spider-Man Remastered
Shared: Action · Adventure · Action-Adventure

Slime Rancher 2
Shared: Relaxing · Cute · Adventure

Psychonauts
Shared: Platformer · Action · Adventure

I wanna be the Creator
Shared: Action · Platformer · Precision Platformer

Getting Over It with Bennett Foddy
Shared: Platformer · Funny · Casual

Pogostuck: Rage With Your Friends
Shared: Precision Platformer · Platformer · Action

Placid Plastic Duck Simulator
Shared: Relaxing · Casual · Cute

Rise of the Tomb Raider™
Shared: Action · Adventure · Third Person

Toree 2
Shared: Action · Platformer · Precision Platformer

Jump King
Shared: Precision Platformer · Platformer · Action

Slime Rancher
Shared: Adventure · Cute · Funny