Community Central
Community Central
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Official Unified Community Platform Logo

The Unified Community Platform (UCP) is Fandom's wiki platform, currently running MediaWiki 1.39.7. It was launched in 2020 as the new platform for historical Fandom and historical Gamepedia wikis, to have them all be on one shared platform in order to benefit from the same underlying technology. This was also the first major MediaWiki upgrade for historical Fandom wikis since 2012, which had moved the platform on to MediaWiki 1.19.24.

All new wikis were created on the UCP beginning March 11th, 2020. Wikis created before that date were gradually migrated to the UCP throughout 2020, with historical Gamepedia wikis following suit. The migration to the UCP was followed in 2021 by the Unified Consumer Experience (UCX) site design, including the launch of FandomDesktop and FandomMobile, and Fandom's brand re-launch.

Why create a new platform and why move existing wikis onto it?[]

Fandom's legacy platform was running a much older and heavily customized version of MediaWiki. All the custom features Fandom added over the years, such as Message Walls, threaded Forums, Chat, Achievements, the Admin Dashboard, Special:WikiActivity, and many more, made it nearly impossible to update to a newer version of MediaWiki. That meant losing out on lots of improvements and new features developed by the Wikimedia Foundation that come natively with newer MediaWiki versions.

After Fandom and Gamepedia joined forces in 2019, we finally decided that it was time to untangle Fandom's complex and heavily customized platform, remove or replace outdated features and unite all the wikis in our network on a single platform running an up-to-date version of MediaWiki.

The goal was to give Fandom users access to newer and better MediaWiki features and Gamepedia users access to features that were previously only available on Fandom. As a bonus, our development teams would no longer have to maintain two separate platforms, the larger of which was an outdated custom job that reached the end of its lifespan. Establishing a common foundation would also free up resources for focusing on building new features for our users and finding replacements for any lost in the upgrade.

Details on why we decided to create the UCP and what our process is to get there can be found in this blog post. For the latest news on the UCP, please follow our Staff Blogs. We also regularly share which bug fixes and new features have gone live in our Release Hightlights.

What's different between the UCP and the Fandom legacy platform?[]

The key difference between the UCP and Fandom's legacy platform is that the UCP runs on MediaWiki 1.33, while the old platform uses version 1.19. We will not cover the differences between these versions here, since they are not unique to our platform and you can compare MediaWiki versions elsewhere.

The UCP is a work in progress. That means several custom features you may be remember from the old Fandom or Gamepedia platforms are still being worked on and are not yet available on the UCP, but will be at a later date.

If you are here because you're wondering why a specific feature can't be found on the UCP, whether it will be replaced, added later, or not exist on the UCP at all, or if you're curious about differences you've noticed, please see the following list. If you're curious about a feature that is not mentioned here, you can contact your Wiki Representative, other staff members, or ask in our Discord.

For regular updates on which new features and bug fixes we release every week, follow our Release Highlights.

Feature comparison[]

The Editor[]


The Visual Editor in action on a UCP wiki

New Source Editor

The source editor in action on a UCP wiki

Fandom's old platform had three distinct tools for editing articles: The RTE, the Visual Editor, and the source editor. None of these were available on the UCP. Instead, on the UCP you'd find the new MediaWiki Visual Editor and its wikitext source mode.

We have made some interface and design changes to integrate this editor fully with the Fandom brand and platform. Your editor preference that you've set on the old platform carries over to the UCP. That means, if you've chosen the source editor as your default editor in your preferences, articles you want to edit will open in source mode on the UCP as well.

Some editing and wikitext tags you use may be limited or no longer available. Examples include Tab view.

Mobile Editing[]

Mobile editing is not available for wikis on the legacy Fandom platform. UCP wikis can be edited from mobile devices, using either a mobile visual editor or source mode. Recent Changes on UCP wikis will show which edits were made via a mobile device.

Mobile edit preview[]

It's currently not possible to preview how your published page will look like on mobile when you're editing on desktop. This feature saw very little use on Fandom's legacy platform and has therefore not been ported to the UCP so far.

Special:Videos and Special:Images[]

Both of these pages have been replaced by MediaWiki's standard page Special:NewFiles that allows both for the upload of new images to the wiki and the addition of videos from supported video sources. Special:NewFiles also introduces convenient filters for searches, such as search by file name or type.

CSS and JavaScript customization[]

You can edit your personal code on in the User namespace. Any custom code you add there will apply on UCP wikis only.

Admins can customize their wiki via CSS just as they do on the legacy platform. Please note, however, that your custom code may need to be adjusted before it achieves the same results on a UCP wiki as it does on the legacy platform.

JavaScript Review is available on the UCP, JS customization is now available on UCP wikis (if you asked for it to be enabled via Special:Contact).

MediaWiki extensions[]

The following extensions that you can request staff to enable for your wiki on Fandom's legacy platform are also available upon request on the UCP:

These extensions are enabled by default on all UCP wikis:

RSS feeds[]

On the legacy platform, an extension to display RSS feeds is available. This is a third-party extension with some changes made by Fandom. Although this custom extension is not available on the UCP, but RSSPie extension is available.


On the legacy platform, GoogleDocs4MW extension was available. This extension is not available on the UCP, so <googlespreadsheet> tags don't work.


On the legacy platform, CreateBox extension was available. This extension is not available on the UCP, so please use InputBox instead of <createbox>...</createbox> tags.


On the legacy platform, Placeholder extension was available, but this extension is not available on the UCP.

Keyboard shortcuts[]

The Fandom legacy platform has introduced a custom set of keyboard shortcuts several years back. These are now on the UCP.

Link suggestions[]

When you are editing a page and are adding a link via wikitext, Fandom's legacy platform offers suggestions to complete your link for you. These are now on the UCP.

User Profiles[]

Profiles have received a re-design on the UCP, but contain the same basic elements as on the legacy platform: a global header with your avatar and some information about yourself, and local tabs for your profile text, your messages and your list of wiki contributions (labeled “Activity” on the UCP). The main difference to legacy platform wikis is that UCP profiles use new message walls that are not based on MediaWiki - see below.

Social Features[]

Threaded Forums[]

Fandom's threaded forums feature consisted of old code that was very difficult to maintain and update. It was not easily usable on mobile devices. Therefore, it will not be made available on the UCP and has been replaced by Discussions. Existing forum threads have been migrated in their entirety to Discussions so no content was lost. We are working on several enhancements to Discussions to make it feel more familiar to forum users and to make it more powerful. These enhancements are a result of user feedback and a User Experience Research study on forums and Discussions use cases.

Much more in-depth information on why and how we're retiring forums can be found in this Community Central Discussions thread.

Article comments[]

Article comments on Fandom's old platform are based on the same technology as threaded forums and therefore needed to be replaced for the same reasons. A new feature allowing users to comment below wiki articles has been made available on UCP wikis. Existing comments will be migrated to the replacement feature so no content is lost. Admins are able to switch this feature on or off via the Admin Dashboard, according to what suits their community best, just as they can on the old platform.

Message Walls[]

Just like threaded forums and article comments, Fandom's old message walls run on code that is outdated and not suitable for a modern community platform. A replacement user-to-user communication feature is available on the UCP with much of the same functionality. However, wikitext isn't supported on the new message walls on the UCP, and several features necessary to make them as convenient as Fandom's old message walls are still under development. Once the new message walls are more fully developed, existing message threads from Fandom's legacy platform will be migrated to the new walls feature, so no content is lost.

Admins can switch this feature on or off via a toggle in the Admin Dashboard. When message walls are off, the wiki defaults to user talk pages for user-to-user communication.

Message Wall notifications[]

Since Fandom's old message walls are not available on the UCP, the associated notifications dropdown (the one behind the letter icon) is not available on the UCP either. Notifications from Fandom's new message wall feature appear amongst Discussions notifications in the bell dropdown instead. If you have notifications from your message wall on a wiki still on the old platform, you won't be able to see it while you're browsing a UCP wiki. Likewise, you won't be able to see notifications from UCP message walls while you're browsing a legacy wiki.


Blogs are available on the UCP and support wikitext. Existing blog content (blog posts and any comments they may have) is transferred in full when a wiki is migrated to the UCP. Just like on the legacy platform, newly created wikis have blogs enabled by default, but admins are able to turn the feature off in the Admin Dashboard.


Fandom's live chat feature isn't available on UCP, and wikis that migrate to UCP will not have this feature available.


Fandom's wiki-style Polls (AKA AjaxPolls) are not available on the UCP, and wikis that migrate to the UCP will not have this feature available. The global usage of the feature was not sufficient to merit the required effort for replicating the feature on the new software, given some rather tricky technical issues. Discussions has a built-in polls feature which can be used instead.

Creating a New Wiki[]

All Fandom wikis are created on the UCP since March 11th, 2020. This works exactly as on Fandom's legacy platform, with one exception: If we suspect your wiki covers the same topic as another wiki that already exists on Fandom, you will be warned that you are creating a potential duplicate, and your wiki may be reviewed and closed for that reason within days of its creation.

Special pages and admin tools[]


This special page that shows who has edited how much on a specific wiki is available on the UCP.


This special page does not exist on the UCP. However, admins can still turn specific extensions on and off for their wikis. These toggles are now located directly in the right rail of the Admin Dashboard.


This tool, meant to make monitoring a wiki's activity more accessible to new admins and casual users, is not available on the UCP. Instead, users can use Special:RecentChanges to stay up-to-date on what is happening on the wiki. We have received feedback from users who miss Special:WikiActivity and who used it on Fandom's old platform in ways that Recent Changes does not support. We are looking into what we could do to bring functionality similar to Special:WikiActivity to the UCP.


The Community Page, which provides an overview over the community's members and suggestions on how to improve the wiki, is available on the UCP.


This maintenance tool that highlights unclassified templates, non-portable infoboxes and other maintenance issues on a wiki won't be available on the UCP, since it saw only little usage by communities on the Fandom legacy platform. These maintenance tasks can still be accessed through MediaWiki's special pages.


Achievements are now available on UCP wikis and offer the same experience as on the old platform. You can contact Fandom Staff to get this feature enabled on your wiki. However, you can no longer make a custom badge track.

Shared Image repositories[]

The UCP supports image sharing between wikis.

Database dumps and “closed wiki” page[]

When you visit a wiki URL that has been closed, Fandom's legacy platform shows you a page explaining that the wiki has been closed. On this page, you can download a dump file with the wiki's text contents. This is available on the UCP.

The option to request a dump file for an active wiki via the page Special:Statistics is also available on the UCP.

Category Exhibition[]

Category Exhibition was an extension on the legacy platform that had negative impact on search engine optimization (SEO), making categories rank lower for visibility. After being disabled for logged-out users 2 years ago, it was replaced with an SEO-friendly version on UCP, alongside the core MediaWiki category view.

Wiki Activity Monitor[]

WAM (Wiki Activity Monitor) has been inaccurate for 4+ years now, due to how the platform evolved with Discussions and other social features. As a result of feedback from users, we are exploring a replacement for this feature in 2021 that allows wikis to understand how they stack up to their peers.

Features that remain the same on the UCP as on Fandom's legacy platform[]

Once all wikis have moved to the UCP, we will be able to innovate and introduce broader improvements and new features. At least until then, though, the following elements of the Fandom platform won't change.

  • The Fandom skin: With the exception of some adjustments for new and replaced features, such as the new message walls and profiles, wikis on the UCP look the same as on the old platform.
  • Account creation and login
  • Discussions: With the exception of some improvements based on User Experience Research and feedback from Forums-heavy communities.
  • Search: We've made a lot of changes to improve Fandom's internal search under the hood in the past year, but it still looks and works the same. Search works the same on the UCP as it did on the legacy platform.
  • The customizable bottom toolbar for logged-in users
  • The Admin Dashboard - except for Special:WikiFeatures, which is no longer a separate page on the UCP but a list of toggles in the right rail of the dashboard.
  • The Mobile Main Page curation tool
  • Special:ThemeDesigner

See also[]

Further help and feedback[]