What changed
TikTok has sunset the HTML/H5 runtime for Mini Games. Its migration documentation says HTML games stopped being accepted or supported on August 28, 2026, existing online HTML mini games were retired on September 9, and legacy HTML data on the TikTok Minis platform is scheduled to be cleared and deleted on September 30. TikTok does not provide automatic conversion. Developers who want to keep an affected game running must back up the old project and relevant user/business data, rebuild for TikTok's native mini-game runtime using a supported engine workflow, reintegrate platform capabilities, test on real devices, pass review and launch the replacement.
Why it matters
A runtime retirement is much more disruptive than a normal SDK deprecation. HTML/CSS/JavaScript games that previously ran in a WebView cannot be kept alive by renaming files or uploading the old web bundle. TikTok's native mini-game path changes the packaging, runtime and testing model and can require rebuilding platform integrations around login, authorization, advertising, purchases, sharing and user state. The September 30 data-clearing date also makes backup work time-sensitive even for developers who do not plan to complete the migration immediately.
The old runtime is already past its operating deadline
TikTok's timeline is not merely a future warning. New HTML mini games stopped being supported on August 28, and online HTML games were retired on September 9. Continuing operation now requires a native version rather than leaving the existing H5 build in place.
There is no automatic HTML-to-native conversion
TikTok explicitly says a standard website, game URL, web build directory or HTML ZIP cannot be converted directly into a native mini-game package. Developers need a source project built through supported native-runtime tooling such as Unity, Cocos or Laya and must export it in the package format TikTok expects.
Platform capabilities have to be integrated again
The migration checklist includes revalidating login and authorization, in-app ads, in-app purchases, sharing and revisit capabilities. That means teams should treat the work as an application migration with regression testing rather than a build-system switch.
September 30 is a data-retention boundary
TikTok says it will clear and delete legacy HTML platform data on September 30. Developers are told to back up code, assets, configuration, server API details and any business or user data they need to retain before that date.
The native runtime changes the execution model
TikTok's current technical documentation describes native mini games as code packages executed by TikTok's mini-game runtime, with the client responsible for rendering, input, audio, file and network operations. JavaScript or WebAssembly can still be part of the game, but the deliverable is no longer an ordinary web application running in a WebView.