Recursive Tic-Tac-Toe game
About this app
This app is a recursive version of the popular game Tic-Tac-Toe (also known as Xs and Os), based on the Ultimate Tic-Tac-Toe game. The game supports customization of the playing field (width and height), the victory condition, the number of players, and player colors.
Licensed under GPL-3.0-only, by Kirkezz.
What's New in v1.3
Imported from the F-Droid repository index.
- - Ported to SDL3.
- - Replaced the legacy custom GUI system with RmlUI.
- - Added customizable player colors.
- - Refactoring [is still needed].
- - Fixed various bugs.
Version history
Feb 26, 2025 · 22.3 MB · Android API 21–34 · code 3
Imported from the F-Droid repository index.
- - Ported to SDL3.
- - Replaced the legacy custom GUI system with RmlUI.
- - Added customizable player colors.
- - Refactoring [is still needed].
- - Fixed various bugs.
SHA-256 704fa51869ad7ff441edb8831fad7044141d62c4ccce610cfe5117476770a8af
May 30, 2024 · 1.2 MB · Android API 19–33 · code 1
Imported from the F-Droid repository index.
- Initial version
SHA-256 5ec602827afa85abd6faf76fbaa0758fe1be2b9ab62d0cb951ecd082cf26d69e
Will it run on your device?
87%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be org.kirkezz.rttt is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall RTTT first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of RTTT, and a listing is removed when the evidence for it stops holding up.
Get RTTT
Every source we list for org.kirkezz.rttt is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
704fa51869ad7ff441edb8831fad7044141d62c4ccce610cfe5117476770a8af
Signing certificate
c403e4ddb6487e410888d33d76d666bec7ba44911001c9d0a08814acee953a0a
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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