Ruffle

Ruffle is an open-source emulator for content made for Adobe Flash Player, which Adobe stopped supporting at the end of 2020. Its README: “Ruffle is an Adobe Flash Player emulator written in the Rust programming language.” Ruffle is best known as a browser extension and desktop player; this is its native Android app, started by Attila Török in 2022 and adopted by the Ruffle project in 2024 as its official Android application. The team wrote at the time that it supports “most Flash content - even online games like Transformice work!”

Every release is a dated build, version 0.261026 being the one from 26 October 2026, and all are marked as pre-releases.

How it works

• Open a movie by typing its web address and tapping Open URL, by choosing Select a SWF to pick a file, or by opening a .swf file or link from another app.
• Controls: touch works as the mouse. An on-screen keyboard with the arrow keys, letters, digits, space, Ctrl and Alt appears in portrait mode, for games that need keys, and a physical keyboard works too. A button opens the movie’s Flash context menu.
• Saves: games that save their progress keep it in the app’s private storage.
• It runs full screen, with letterboxing for movies of other shapes.

Ruffle’s own compatibility figures, from 13 October 2026: ActionScript 1 and 2, used by older games, at 99% of the language and 82% of the API, and ActionScript 3 at 90% and 82%.

What goes online

Nothing when the app starts, and nothing when you play a SWF file from your phone, unless the movie itself loads something. When it does, or when you open a web address, from the code:

• Requests go out with the user agent Ruffle/<version>, and plain http addresses inside movies are upgraded to https.
• Movies may open network connections to any server without asking, and links a movie opens go to your browser without confirmation.
• Since 0.261008, HTTPS certificates are checked against Android’s own list of trusted certificate authorities instead of a list built into the app. For certificates from public authorities, the library that does this says Android may also go online to check whether a certificate has been revoked, when the server doesn’t send that information itself.
• Requests to fpdownload.adobe.com, Adobe’s old server for Flash components, are redirected to cdn.ruffle.rs; requests to MochiAds, a defunct Flash ad network whose domain is for sale, are blocked.

There are no analytics, crash reports or update check.

About this file

• This is the developer’s own build of version 0.261026 for 64-bit ARM, signed by Attila Török and byte for byte the APK on the project’s GitHub release, which F-Droid distributes unchanged after checking it builds reproducibly. Ruffle isn’t on Google Play, and the Android app isn’t listed on ruffle.rs. This release updates Ruffle’s core and Rust dependencies but claims no separate Android-interface feature.
• The 33.1 MB file runs on Android 8.0 and later and declares 2 permissions, internet access and one that AndroidX adds for internal use.
• Ruffle is licensed under the MIT or Apache-2.0 licence, at your choice. It includes a subset of the Noto Sans font as its fallback font: “Copyright 2022 The Noto Project Authors”, licensed under the SIL Open Font License 1.1, a notice the app itself doesn’t display.
• Adobe and Flash are either registered trademarks or trademarks of Adobe in the United States and other countries. Ruffle is not made by Adobe.
• The screenshot, from F-Droid, shows the start screen.

CPU types in this build: arm64-v8a (64-bit ARM, almost every phone since 2017).

Versions currently kept in the F-Droid repository. We host and check only the newest one. Full changelog.