Games like Kid Chaos
Games like Kid Chaos include Pizza Tower, The Messenger, Shovel Knight: Treasure Trove, Sonic Mania, and Broforce. We matched them by the tags players give Kid Chaos on Steam (Retro, Side Scroller, 2D Platformer, Cartoon, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Pizza Tower
Shared: 2D Platformer · Pixel Graphics · Platformer

The Messenger
Shared: Retro · Pixel Graphics · Platformer

Shovel Knight: Treasure Trove
Shared: Retro · Pixel Graphics · Platformer

Sonic Mania
Shared: Retro · Platformer · 2D

Broforce
Shared: Pixel Graphics · Action · 2D

SANABI
Shared: Pixel Graphics · 2D Platformer · Action

Super Meat Boy
Shared: 2D Platformer · Platformer · Pixel Graphics

Cuphead
Shared: Cartoon · Platformer · 2D

NINJA GAIDEN: Ragebound
Shared: 2D Platformer · Side Scroller · Retro

Katana ZERO
Shared: Pixel Graphics · 2D Platformer · Action

Bloodstained: Curse of the Moon
Shared: Retro · Pixel Graphics · Side Scroller

Gravity Circuit
Shared: Pixel Graphics · Platformer · 2D Platformer

Sonic Origins
Shared: 2D Platformer · Retro · Pixel Graphics

Terminator 2D: NO FATE
Shared: Side Scroller · 2D Platformer · Pixel Graphics

Huntdown
Shared: Side Scroller · Pixel Graphics · Retro

VVVVVV
Shared: Pixel Graphics · 2D Platformer · Retro

Momodora: Reverie Under The Moonlight
Shared: Side Scroller · 2D Platformer · Pixel Graphics

Celeste
Shared: Pixel Graphics · 2D Platformer · Platformer

Door Kickers: Action Squad
Shared: 2D Platformer · Retro · Pixel Graphics

Duck Game
Shared: Pixel Graphics · 2D · Action

SHINOBI: Art of Vengeance
Shared: 2D Platformer · Platformer · Action

BattleBlock Theater®
Shared: Platformer · Funny · 2D

Shadow of the Ninja - Reborn
Shared: Side Scroller · Retro · 2D Platformer

Level Devil
Shared: 2D Platformer · Retro · Pixel Graphics