Games like Tuna The Cat
Games like Tuna The Cat include Cuphead, Geometry Dash, Brawlhalla, Super Meat Boy, and Celeste. We matched them by the tags players give Tuna The Cat on Steam (Difficult, Side Scroller, 2D Platformer, Platformer, and 2.5D): closest matches first, and among equally close ones the better-known games.

Cuphead
Shared: Difficult · Platformer · Cartoon

Geometry Dash
Shared: Difficult · Platformer · Side Scroller

Brawlhalla
Shared: 2D Platformer · Casual · Platformer

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

Celeste
Shared: Difficult · Platformer · 2D Platformer

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

Oozi: Earth Adventure
Shared: 2D Platformer · Platformer · Casual

Pizza Tower
Shared: 2D Platformer · Platformer · Cartoony

Crash Bandicoot™ N. Sane Trilogy
Shared: Difficult · Platformer · Adventure

Spelunky 2
Shared: Difficult · 2D Platformer · Platformer

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

The Pedestrian
Shared: Side Scroller · Platformer · 2D Platformer

Castle of Illusion
Shared: Platformer · Casual · Adventure

Giana Sisters: Twisted Dreams
Shared: Difficult · Side Scroller · Platformer

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

Vibrant Venture
Shared: Side Scroller · Platformer · 2D Platformer

Touhou Luna Nights
Shared: Difficult · Side Scroller · Platformer

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

Mega Man 11
Shared: Side Scroller · Platformer · Difficult

Knock-knock
Shared: Side Scroller · 2D Platformer · Difficult

Hollow Knight
Shared: Difficult · Platformer · Adventure

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

Sonic Superstars
Shared: 2D Platformer · Platformer · Casual

Curse Crackers: For Whom the Belle Toils
Shared: Side Scroller · Platformer · 2D Platformer