Sushi Cat is a puzzle Web Game about a huge, blob-like cat who loves sushi. The game involves him eating copious amounts to get fatter. The game also features various cutscenes with artwork by Jimp.

Sushi Cat is succeeded by Sushi Cat: The Honeymoon, Sushi Cat 2, Sushi Cat 2: The Great Purrade, and Sushi Cat-a-Pult. In November 2025, after Flash was deactivated, all five games were released on Steam as a collection named Sushi Cat: Legacy Collection.

Sushi Cat provides examples of:

• Anti-Frustration Features: If Sushi Cat gets stuck somewhere on a level, he'll shrink a bit and become a bit more fluid to squeeze through the gap.
• April Fools' Day: For 2015, the devs released Sushi Cat: StoryCraft World Creator. It presented itself as Sushi Cat meets Minecraft, but claimed to have a long loading time and so had a minigame during the loading screen to compensate—you fed Sushi Cat sushi as normal, but once he got big enough it would switch to "Diet Mode" and the sushi would be replaced with veggies until Sushi Cat was small enough for it to switch back. All while a loading bar with "Reticulating Splines"-esque comments would load until full, and then reset. While it was a casualty of Flash's deactivation, it made it into the Legacy Collection as a reward for completing every other game. They even made a wiki for it!
• Ascended Meme: Nyan Cat appears as one of the many powerups in Sushi Cat 2: The Great Purrade.
• And Your Reward Is Clothes: In both Sushi Cat 2 and Sushi Cat 2: The Great Purrade, collecting golden sushi gets you more costumes to select.
• Animal Sweet on Object: Sushi Cat's entire relationship with his "wife" is basically this, as she's a pink cat plush he won at the fair and then married.
• Animate Inanimate Object:
  • Most of the sushi and other food in the series have a face on them, though it's never explained whether or not they're sentient.
  • The Big Bad of Sushi Cat: The Honeymoon is a sentient volcano.
• Amazing Technicolor Wildlife: Sushi Cat is a bright blue cat.
• Badass Adorable: The titular protagonist of the series, Sushi Cat, is able to grow to ridiculous sizes, just by eating copious amounts of sushi. In Sushi Cat: The Honeymoon he stops a volcano from erupting, and in his playable appearance in The Big Journey, he's capable of destroying monsters just by jumping into them.
• Batman Can Breathe in Space: At the end of Sushi Cat-a-Pult, Sushi Cat successfully manages to get to the moon before the rocket, and is somehow able to breathe in space without a helmet.
• Beware the Nice Ones: Sushi Cat may be a pretty friendly tabby cat, but don't try to get between him and his wife. The volcano from Sushi Cat: The Honeymoon, and the seagull from Sushi Cat-a-Pult both learn this the hard way.
• Big Bad:
  • The volcano from Sushi Cat: The Honeymoon, who attacked the cruise ship that Sushi Cat was on, and presumably threatened to destroy the island that Sushi Cat got onto.
  • Bacon Dog, who steals Sushi Cat's wife in Sushi Cat 2.
• Big Eater: Each game revolves around the protagonist eating a lot of sushi to get larger.
• Cats Are Lazy: Sushi Cat is a chubby feline who just likes to lay around and eat.
• Cat Stereotype: Sushi Cat is a friendly male tabby.
• Companion Cube: Sushi Cat's wife is a pink cat plushie.
• Early Installment Character-Design Difference: Sushi Cat gained tabby stripes between the first two games.
• Extreme Omnivore:
  • In Sushi Cat 2 and Sushi Cat 2: The Great Purrade, Sushi Cat collects the pieces of golden sushi by eating them. There are also a few Power Ups in the series that seem to resemble objects that aren't normally edible in real life.
  • At the end of Sushi Cat-a-Pult, after Sushi Cat jumps all the way to the moon, he eats it.
• Fantastic Racism: In the first game, a human bus driver refuses to let Sushi Cat take a ride despite having enough yen to pay for it, and in Sushi Cat-a-Pult, a ticket cashier pig refuses to give Sushi Cat a ticket to partake in the "Race to the Moon", both on the grounds that letting him in would violate a "no cats" policy. Considering this series takes place in a world of partially civilized animals, one would question why such businesses would have a "no cats" policy.
• Guest Fighter:
  • One of the playable costumes in Sushi Cat 2 is the Blue Elephant from Achievement Unlocked.
  • One of the many powerups in Sushi Cat 2: The Great Purrade, features Nyan Cat.
  • Sushi Cat himself has become one in The Big Journey as the first unlockable character.
• Heel–Face Turn: Bacon Dog, who stole/kidnapped Sushi Cat's wife at the beginning of the game, has one at the end of Sushi Cat 2.
• Intentional Weight Gain: The titular Sushi Cat intentionally gains weight by eating tons of sushi for various purposes, such as being heavy enough to open an automatic door, enter a sumo contest, and rescue his beloved pink cat plushie.
• Loading Screen Message Gag: StoryCraft World Creator opens with what is, ostensibly, a Loading Screen minigame in which you feed sushi to Sushi Cat while waiting for the actual game to load. One of the hints that there is no "actual game" is that the messages telling you what's currently being loaded are randomly-generated and vary from plausible-sounding ones like "Caching Temporary NPCs" to obvious nonsense like "Evolving Over 9000 Ferrets".
• Meaningful Name:
  • Sushi Cat is called that because he's a cat that loves sushi.
  • In Sushi Cat 2, we have Bacon Dog, a dog who loves bacon.
• Mega Neko: Sushi Cat can grow big enough to pull off such feats as plugging an active volcano and eating the moon.
• Oddball in the Series:
  • Sushi Cat Words. Unlike all the other games in the series, Sushi Cat Words completely drops the physics that the series is known for in favor of a standard word puzzle game.
  • To a lesser extent, Sushi Cat-a-Pult, where you launch Sushi Cat to complete a goal of either reaching a certain distance, or collecting a certain amount of sushi. Unlike Sushi Cat Words, Sushi Cat-a-Pult still keeps the physics that the series is most known for.
• Official Couple: At the beginning of Sushi Cat: The Honeymoon, it's shown that Sushi Cat and the pink cat plush toy he won in the first game are now officially married.
• Official Couple Ordeal Syndrome: Sushi Cat has his plush wife "kidnapped" in Sushi Cat 2 and Sushi Cat-a-Pult, accidentally loses her in Sushi Cat 2: The Great Purrade, and has their vacation ruined by a sentient volcano in Sushi Cat: The Honeymoon.
• Partially Civilized Animal: Sushi Cat looks like a normal cat, albeit highly stylized, and gets petted like a normal cat in the first game. Yet he displays humanoid behaviors like visiting stores in the sequel.
• Plug the Volcano: The Big Bad of The Honeymoon is a sentient volcano. Sushi Cat defeats it by eating a lot of sushi and growing big enough to stop the volcano with his own body.
• Recycled Title: Sort of. The second sequel in the series is called Sushi Cat 2, and the next game in the series is titled Sushi Cat 2: The Great Purrade.
• Secret Character: If you collect every single piece of golden sushi in Sushi Cat 2, then you get to play as Bacon Dog. If you do the same in Sushi Cat 2: The Great Purrade, you get to play as Sushi Cat's Wife.
• Trademark Favorite Food: As his name implies, Sushi Cat's favorite food is sushi. Then there's Bacon Dog, who's favorite food is bacon.
• Uncertain Doom: The seagull that steals Sushi Cat's wife in Sushi Cat-a-Pult is squashed by a giant Sushi Cat in only the second cutscene he appears in. Due to the series' lighthearted nature, it's debatable if he's dead or not.
• Weight Taller: The game's narrative operates on this trope, as many levels involve him trying to get tall enough to accomplish something, and deciding that gorging himself on sushi is the best way to accomplish this. One of the more egregious examples is eating enough to reach the height of a Ferris wheel.