Games like Ralf
Games like Ralf include Cuphead, Broforce, Skul: The Hero Slayer, Pikuniku, and Mark of the Ninja. We matched them by the tags players give Ralf on Steam (Indie, Casual, Action, Platformer, and 2D): closest matches first, and among equally close ones the better-known games.

Cuphead
Shared: Platformer · Cartoon · Indie

Broforce
Shared: Action · 2D · Indie

Skul: The Hero Slayer
Shared: Indie · Action · 2D

Pikuniku
Shared: Indie · Casual · Action

Mark of the Ninja
Shared: Indie · Platformer · Action

Gensokyo Night Festival
Shared: Indie · Action · Casual

Hollow Knight
Shared: Platformer · Indie · 2D

Montaro
Shared: Casual · Indie · Cute

Rogue Legacy
Shared: Indie · Platformer · Action

Pizza Tower
Shared: Indie · Cartoony · Platformer

Toki Tori
Shared: Indie · Casual · Platformer

Tribal Hunter
Shared: Action · Casual · Indie

Dust: An Elysian Tail
Shared: Action · Indie · Platformer

Super Fancy Pants Adventure
Shared: Indie · Action · Casual

Rogue Legacy 2
Shared: Indie · Action · Platformer

Monster Boy and the Cursed Kingdom
Shared: Indie · Action · Platformer

BEEP
Shared: Indie · Platformer · 2D

Touhou Endless Dream
Shared: Casual · Indie · Cartoony

Minimalism
Shared: Indie · Casual · Action

Twin Shot Deluxe
Shared: Casual · Action · Platformer

Defy Gravity Extended
Shared: Indie · Platformer · 2D

Turbo Pug
Shared: Indie · Casual · 2D

Shovel Knight: Treasure Trove
Shared: Platformer · Indie · 2D

Gato Roboto
Shared: Indie · Action · 2D