4chan X is a script that adds various features to anonymous imageboards. It was originally developed for 4chan but has no affiliation with it.
It was previously developed by aeosynth, Mayhem, ihavenoface, Zixaphir, Seaweed, and Spittie, with contributions from many others.
If you're looking for a maintained fork of OneeChan (a style script used in addition to 4chan X), try https://github.com/KevinParnell/OneeChan.
Uninstalling: 4chan X disables the native extension, so if you uninstall 4chan X, you'll need to re-enable it. To do this, click the [Settings] link in the top right corner, uncheck "Disable the native extension" in the panel that appears, and click the "Save Settings" button. If you don't see a "Save Settings" button, it may be being hidden by your ad blocker.
Private browsing: By default, 4chan X remembers your last read post in a thread and which posts were made by you, even if you are in private browsing / incognito mode. If you want to turn this off, uncheck the Remember Last Read Post and Remember Your Posts options in the settings panel. You can clear all 4chan browsing history saved by 4chan X by resetting your settings.
Use of the "Link Title" feature to fetch titles of Youtube links is subject to Youtube's Terms of Service and Privacy Policy. For more details on what information is sent to Youtube and other sites, and how to turn it off if you don't want the feature, see 4chan X's privacy documentation.
Install Violentmonkey, Tampermonkey, or Greasemonkey (issues since v4: #2526, #2576), then click here to install 4chan X.
Ports of Greasemonkey are available for SeaMonkey and Pale Moon.
Userscript: Install Violentmonkey or Tampermonkey, then click here to install 4chan X.
Chrome extension: 4chan X is also available as a standalone Chrome extension. The Chrome extension has the additional feature of being able to sync your settings and data with other devices via Chrome Sync. But there is an issue when the script updates: Whenever the Chrome extension is updated, until you hard refresh (F5) the tab, 4chan X is unable to save any data (such as posts marked as yours and settings changes). The userscript version above does not have this problem when 4chan X updates, only when Violentmonkey / Tampermonkey is updated. To install as a Chrome extension:
chrome://extensions and drag the downloaded file onto the page. Alternatively, you can install 4chan X from the Chrome store.Note: This version of 4chan X does not work with Opera 12. If you need Opera 12 support, try loadletter's fork instead.
Install the Userscripts extension. Enable it by pressing ⌘,, navigating to the extensions pane and checking Userscripts checkbox. Now open the Userscripts editor by clicking on the </> button in the taskbar. Then click on the + button and select the New Javascript option. Replace the default text with the contents of the 4chan X script. Finally save it by pressing ⌘s.
The game intended to use a stamina-gauge mechanic common to mobile social games for its free-to-play tier, allowing access to over 100 free tracks. Serious players could subscribe to a monthly flat-rate premium "Ultimate Service" plan to eliminate stamina constraints and gain access to a larger pool of arcade songs. ULTIMATE MOBILE - Konami
As of June 2026, keep an eye on official Konami e-amusement channels for any unexpected news.
“Ultimate Mobile Update Complete. You are now the controller. Clear the song. Or be cleared.” sound voltex ultimate mobile upd
Sound Voltex Ultimate Mobile Update: The Saga of Konami's Missing Mobile Rhythm Game (2026 Edition)
The official SOUND VOLTEX ULTIMATE MOBILE was quietly by Konami and is no longer in development. While a location test was held in 2019, the project was scrapped for unknown reasons, likely due to the difficulty of translating arcade-style controls to a touchscreen. The game intended to use a stamina-gauge mechanic
On , the hopes of thousands of fans were quietly extinguished. Konami posted a brief update on the "ULTIMATE MOBILE" official website, announcing the cancellation of pre-registration for both SOUND VOLTEX ULTIMATE MOBILE and DanceDanceRevolution ULTIMATE MOBILE .
The also addresses several long-standing bugs: “Ultimate Mobile Update Complete
Konami initially designed the Ultimate Mobile series to expand its legendary onto iOS and Android platforms. While beatmania IIDX Ultimate Mobile successfully launched and received years of routine version updates, the Sound Voltex iteration faced critical development hurdles.
During its public showcases at JAEPO 2019 and the Tokyo Game Show (TGS 2019), Konami revealed an interface heavily based on , the flagship arcade version running at the time. The initial showcase detailed a few core features: 1. Dual Control Options
Despite successful location tests in 2019 at events like JAEPO and Tokyo Game Show, the project was quietly shelved for unknown reasons. Fans often speculate it was due to the difficulty of replicating the complex "knob" (effector) controls on a touch screen without the official NEMSYS Entry Model controller. Today, the story of Ultimate Mobile
Install Tampermonkey, then click here to install 4chan X.
4chan X can be used in some browsers that do not support userscripts using a local proxy. Not all features will work.
New features and non-urgent bugfixes are released on the beta channel for further testing before they are moved the stable version. Please report any issues you find, and be sure to mention which version you're using. You should back up your settings regularly to prevent them from being lost due to bugs.
To install the beta version and get updates whenever there's a new beta version:
chrome://extensions)To install the current beta version but get updates from the stable channel (for example, if just you want a particular recent feature):
If you encounter a bug, try the steps here, then report it to the issue tracker. If the bug seems to be caused by a script update, you can install a old version from the changelog.