Is Cat Mario unblocked at school?

Yes. Cat Mario runs in a normal browser tab from catmario.org, with nothing to install, so it plays on most school Chromebooks. If a network filter blocks the site, only that network's administrator can change it.

Is Cat Mario free to play here?

Yes. The game is an HTML5 port served from catmario.org and runs in the page — no download, no account, no plugin. Press Play, then Start Game.

What are the controls?

Left and right arrows walk, Space or Up jumps, Down crouches and enters pipes. On a phone or tablet the game draws a direction pad and a square jump button under the stage.

Is Cat Mario the same game as Syobon Action?

Yes. Syobon Action is the original Japanese name of the game made by Chiku in 2007; “Cat Mario” is what English-speaking players started calling it. This is tiwb’s HTML5 port of that game.

Does Cat Mario save my progress?

Yes. The port stores the stage and checkpoint you reached in your browser, so Start Game continues from there. Settings → Clear save data starts you over from 1-1.

How many lives do I have?

As many as you need. The stage card counts deaths down from 2, and when it passes zero it simply keeps going into negative numbers. There is no game over screen.

Why do I keep dying in the same place?

That is the game. Every trap is fixed, so each death shows you one more of them. Go slower at the spot that killed you and look for what moved.

Cat Mario Unblocked — Play Syobon Action Free

This is Cat Mario unblocked: Syobon Action’s troll levels run above as an HTML5 game served from catmario.org itself, so it plays in an ordinary browser tab on a school Chromebook, laptop or phone — free, in English, with no download and no account.

Cat Mario: a familiar level that is out to get you

Cat Mario starts on a screen anyone will recognise: blue-sky world 1-1, a green hill, brown bricks, a row of question blocks and a round enemy walking towards you. The difference is the hero, a small white cat, and the fact that the level knows exactly what you expect it to do. The first question block you jump for may not be where you think it is. The floor under a harmless-looking stretch may fall away. A cloud may have teeth.

The original is Syobon Action (しょぼんのアクション), a free Windows game made by the Japanese developer Chiku in 2007. It spread in the West as “Cat Mario” because of how closely it parodies the old plumber game, and it became the reference point for “troll” platformers — games that are designed to be learned through deaths rather than beaten on sight. This page runs tiwb’s HTML5 port of it, which the old catmario.org used to frame from GitHub; here it is served from catmario.org itself, with the menus and the in-game messages in English.

The port’s stage table runs from 1-1 to 2-4, with underground rooms and a hidden “Owata Zone” along the way. There is no timer to beat and no game over: every death just sends you back to the start of the stage or its checkpoint, and the stage card counts your deaths down past zero into negative numbers. The score in the corner rewards how far you got, how few deaths it took and how fast you were.

Controls & mechanics

Action	Control	Purpose
Walk	Left and right arrow keys	The cat has a little run-up; short taps give you fine positioning near edges
Jump	Space or Up arrow	Hold for a higher jump. Many traps sit exactly where a full jump lands
Crouch / enter pipe	Down arrow	Stand on a pipe and press Down to try it — some are exits, some are not
Start	Start Game button	Continues from the stage and checkpoint you reached last time
Touch	On-screen pad + square jump button	Settings has a one-hand pad that puts the jump on the pad’s up arrow

How to get through Cat Mario

Treat the first death as a scouting run: Cat Mario is built to be learned. Every trap is in the same place next time, so when something kills you, note exactly where you stood and what moved. The second attempt is a different game.
Do not trust question blocks: Some are real, some are empty, some drop something you should not touch. The hint blocks with a ? pop up a message instead of an item — read it, it is usually a joke with a warning in it.
Walk, then jump: A lot of the game’s traps are hidden blocks that appear when you jump into the space under them and knock you back into a pit. Crossing a gap by walking to the very edge and taking a low jump avoids many of them.
Stay away from the smiling cloud: Touching certain clouds ends the run with a cheerful “Tasty!!”. When a cloud hangs over the path, pass under it low and fast.
Mushrooms are not upgrades: The poison one kills, and even the “safe” one leaves the cat saying “Not poison, but…”. The flower sets you on fire. Nothing in this game makes the cat bigger or stronger.
Pipes are a gamble: Down enters pipes, and some of them are the real route. Others are a dead end with a message to match. When you find the right pipe in a stage, remember it — the save keeps your checkpoint, not your notes.

Key features

Eight stages: The port’s stage table runs 1-1 to 2-4, with underground sections and hidden rooms.
Traps you learn: Hidden blocks, falling floors, fake clouds, poisoned items and a flagpole with an attitude.
No game over: Deaths count down past zero on the stage card; you always get another go.
Saves your stage: Progress (stage and checkpoint) is kept in the browser; Settings has a button to clear it.
English text: The Chinese menus and in-game messages of the port were translated for this site.
Keyboard or touch: Arrows and Space on a laptop or Chromebook, an on-screen pad on phones and tablets.

Game info

Title: Cat Mario
Developer: Chiku
Category: Platformers
Platform: Web browser (HTML5)
Credits: Syobon Action by Chiku (2007) · HTML5 port by tiwb (github.com/tiwb/catmario) · English text for catmario.org · served from catmario.org

Pro tip: When a stretch of ground looks too easy, it is. Stop just before it, take one careful step, and watch what happens — the cat survives far more traps walking into them slowly than it does running at full speed.