Games like The Impossible Waterboy
Games like The Impossible Waterboy include Celeste, Super Meat Boy, Defy Gravity Extended, Geometry Dash, and LIMBO. We matched them by the tags players give The Impossible Waterboy on Steam (Puzzle Platformer, Physics, Precision Platformer, 2D Platformer, and Difficult): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · Indie

Super Meat Boy
Shared: Precision Platformer · Difficult · 2D Platformer

Defy Gravity Extended
Shared: Puzzle Platformer · Indie · Platformer

Geometry Dash
Shared: Difficult · Precision Platformer · 2D

LIMBO
Shared: Puzzle Platformer · Indie · Puzzle

Braid
Shared: Puzzle Platformer · 2D Platformer · Indie

Webbed
Shared: 2D Platformer · Physics · Puzzle Platformer

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

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

Zup! S
Shared: Physics · Indie · Casual

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

Getting Over It with Bennett Foddy
Shared: Physics · Difficult · Singleplayer

Downwell
Shared: Precision Platformer · Indie · 2D Platformer

Zup!
Shared: Physics · Indie · Casual

BEEP
Shared: Indie · Physics · Platformer

Portal 2
Shared: Puzzle Platformer · Puzzle · Platformer

VVVVVV
Shared: Precision Platformer · 2D Platformer · Indie

Portal
Shared: Puzzle Platformer · Puzzle · Physics

Zup! 2
Shared: Physics · Indie · Casual

Munin
Shared: Puzzle Platformer · Indie · Casual

Toki Tori
Shared: Indie · Puzzle · Casual

Zup! F
Shared: Physics · Indie · Casual

Zup! X
Shared: Physics · Indie · Casual

Hollow Knight
Shared: Difficult · Platformer · Indie