Games like John's Quest
Games like John's Quest include Anomaly Agent, SANABI, Black Myth: Wukong, Afterimage, and Eastern Exorcist. We matched them by the tags players give John's Quest on Steam (2D Platformer, Action RPG, Point & Click, Twin Stick Shooter, and Side Scroller): closest matches first, and among equally close ones the better-known games.

Anomaly Agent
Shared: 2D Platformer · Side Scroller · Action RPG

SANABI
Shared: 2D Platformer · Adventure · Action

Black Myth: Wukong
Shared: Action RPG · RPG · Action-Adventure

Afterimage
Shared: 2D Platformer · Side Scroller · Action RPG

Eastern Exorcist
Shared: Side Scroller · Action RPG · Adventure

Castlevania: Belmont's Curse
Shared: 2D Platformer · Action RPG · Platformer

Blasphemous 2
Shared: 2D Platformer · Adventure · Side Scroller

ASTLIBRA Revision
Shared: Action RPG · Side Scroller · 2D

Songs for a Hero - Definitive Edition
Shared: 2D Platformer · Adventure · Platformer

PATAPON 1+2 REPLAY
Shared: Action RPG · 2D Platformer · Action-Adventure

Prince of Persia The Lost Crown
Shared: 2D Platformer · Side Scroller · Adventure

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Trine 5: A Clockwork Conspiracy
Shared: 2D Platformer · Adventure · Platformer

Dungeon Munchies
Shared: Adventure · RPG · Indie

Thank Goodness You're Here!
Shared: 2D Platformer · Adventure · Side Scroller

Hero Siege
Shared: Action RPG · RPG · Adventure

Last Epoch
Shared: Action RPG · RPG · Adventure

Mina the Hollower
Shared: 2D Platformer · Action-Adventure · Platformer

There Is No Game: Wrong Dimension
Shared: Point & Click · Adventure · Indie

Sonic Superstars
Shared: 2D Platformer · Platformer · Adventure

Dragon's Dogma 2
Shared: Action RPG · RPG · Adventure

Celeste
Shared: 2D Platformer · Platformer · Indie

Smilemo
Shared: 2D Platformer · Adventure · Platformer

Nice Day for Fishing
Shared: Action RPG · Adventure · Side Scroller