Games like Don't Be A Baby!
Games like Don't Be A Baby! include SANABI, Broforce, Cuphead, Pizza Tower, and Shovel Knight: Treasure Trove. We matched them by the tags players give Don't Be A Baby! on Steam (Action, Adventure, Platformer, Shooter, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Action · Adventure · 2D Platformer

Broforce
Shared: Action · Platformer · Shooter

Cuphead
Shared: Platformer · Cartoon · Action

Pizza Tower
Shared: 2D Platformer · Platformer · Action

Shovel Knight: Treasure Trove
Shared: Platformer · Adventure · Action

Sonic Superstars
Shared: Action · Platformer · Adventure

Sonic Origins
Shared: Action · Adventure · 2D Platformer

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

Hollow Knight
Shared: Platformer · Adventure · 2D

Sonic Mania
Shared: Platformer · Adventure · Action

Tomb Raider Game of the Year
Shared: Action · Adventure · Shooter

Mark of the Ninja
Shared: Platformer · Action · Adventure

Katana ZERO
Shared: Action · Platformer · 2D Platformer

NINJA GAIDEN: Ragebound
Shared: Action · Platformer · 2D Platformer

Zombotron
Shared: Action · Adventure · Shooter

Rogue Legacy 2
Shared: Action · Platformer · Adventure

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

F.I.S.T.: Forged In Shadow Torch
Shared: Action · Platformer · Adventure

South Park™: The Stick of Truth™
Shared: Adventure · Action · Dark Humor

DuckTales: Remastered
Shared: Adventure · Platformer · Action

Escape From Duckov
Shared: Action · Adventure · Shooter

The Messenger
Shared: Platformer · Action · Retro

Grandpa High on Retro
Shared: Action · Adventure · Shooter

Celeste
Shared: Platformer · 2D Platformer · Adventure