ONOFF

Free online action game · Plays instantly in your browser · Works on mobile & desktop

Quick answer

Is ONOFF free? Yes — 100% free, no payment.
Download needed? No — it plays in your browser.
Works on mobile? Yes — phones & tablets, full touch.
Session length? About 5–15 minutes.
Players? Single player.

A two-tone puzzle-platformer where one tap flips the whole world between two dimensions: solid platforms in one layer turn into deadly spikes in the other. Run, jump and toggle your way to the star across 25 hand-crafted levels.

About ONOFF

ONOFF is a beautifully minimal puzzle-platformer made for the 13-kilobyte js13kGames 2018 jam, where the entire screen flips between two states with a single tap. A surface that's safe to stand on in the "on" world can turn into a wall of spikes the instant you switch to "off," so every level is really a timing-and-spatial puzzle dressed up as a platformer. No clutter at all: a blocky little robot, a goal star, a death counter, and a catchy synth loop the authors wrote note by note. Everything you see and hear is generated in the browser, the art being plain SVG shapes and the music and sound effects synthesized live with the Web Audio API, so there are no image or sound files whatsoever. I self-hosted it as a single offline file, stripped out the bundled level editor, gated the audio behind a tap, and added touch buttons so it plays nicely on phones too. Open-source game by Daniel Marino and Brad Dunbar (audio via TinyMusic by Kevin Ennis), used under the MIT license.

Unblocked Chromebook No Download Mobile Classic

How to play ONOFF

Tap PLAY to drop into level 1. Move your robot left and right, jump up onto platforms, and use the FLIP button (or Spacebar) to swap the world between its two dimensions. Whatever's solid in one dimension is deadly in the other, so flip at the right moment to open a safe path. Touch the pulsing star to finish a level and move on. Fall off the bottom or touch a spike and it costs you a death and restarts the level. Clear all 25 levels to win.

Controls

Desktop: A/D or Left/Right arrows to move, W or Up arrow to jump, Spacebar to flip dimensions, M to mute. Mobile: on-screen left/right pad, the up button to jump, and the FLIP button to switch dimensions. A gamepad also works.

Tips & tricks

Look before you leap: scan where the spikes will appear in the OTHER dimension before you flip, not after.
Flipping is instant and free, so use quick double-flips to slip past a hazard that only exists for a moment.
Momentum carries through a flip - you can jump, flip mid-air, and land on a platform that only exists in the new dimension.
Deaths only reset the current level, never your progress, so treat each restart as a chance to memorize the layout.
On phones, plant your thumb on the move pad and tap FLIP with the other hand so you never stop moving while switching worlds.

Game features

100% free to play — no payment, ever
Plays instantly in your browser — no download or install
Works on desktop, phone and tablet
No sign-up and no email required
Built with HTML5 — runs on any modern browser
Single-player — play at your own pace

Frequently asked questions

How do you play ONOFF?

What are the controls for ONOFF?

Is ONOFF free to play online?

Totally free. You can play ONOFF in the browser without paying, downloading or signing up for anything.

Can I play ONOFF on mobile?

Yes. ONOFF works in any modern mobile browser with full touch support, so it plays on phones and tablets as well as on a laptop or desktop — nothing to install.

Who made ONOFF?

ONOFF is a free browser edition of a well-known classic, rebuilt with modern web technology so it runs anywhere.

Is ONOFF unblocked at school or work?

ONOFF is a plain web page — no plugin, no installer, no app store — so it loads on a Chromebook or a locked-down school or office laptop the same way any other page does. Whether it opens comes down to your network's filter rather than the game itself, and there is nothing to install either way.

How many players is ONOFF?

ONOFF is a single-player game. You are playing against the game and against your own best score, at whatever pace suits you.

Does ONOFF save my progress?

Yes. ONOFF keeps your best score and progress in your own browser's local storage, so it is still there when you come back on the same device. Nothing is uploaded and no account is involved — clearing your browser data is what resets it.

How do you get better at ONOFF?

Look before you leap: scan where the spikes will appear in the OTHER dimension before you flip, not after. Flipping is instant and free, so use quick double-flips to slip past a hazard that only exists for a moment. The full tips list on this page covers the rest.

What kind of game is ONOFF?

ONOFF is a free action game that runs in the browser. A two-tone puzzle-platformer where one tap flips the whole world between two dimensions: solid platforms in one layer turn into deadly spikes in the other. A typical session runs about 5–15 minutes.

Embed ONOFF

Want ONOFF on your own site, blog or classroom page? It's free to embed — copy this code:

<iframe src="https://360playzone.com/game/onoff-toggle" width="640" height="480" style="border:0;max-width:100%" allowfullscreen loading="lazy" title="ONOFF"></iframe>
<p>Free ONOFF game by 360 PlayZone</p>

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