A Tic-Tac-Tao clone, a simple pen-and-paper game
About this app
I created this implementation using Kotlin and Jetpack Compose for Android devices.
Features Technical Jetpack Compose Material3 and Dynamic Color
Game Variable game board grid size from three-by-three to nine-by-nine (Larger than nine-by-nine is simply ridiculous and unplayable in mobile phones) Variable game ai difficulty (easy, medium, hard)
Variations Simple Game
The Simple game is the most simple variation of Tic-tac-tao with a three-by-three grid with two players. The player who succeeds in placing three of their marks in horizontal, vertical, or diagonal is the winner.
Simple Game AI
Currently, in hard mode, AI uses a strategy rather than an AI search algorithm like MinMax. This strategy consists of these steps: Win, Block, Fork, Block Fork, Center Play, Corner Play, and Side Play. In Easy difficulty, AI plays a random empty cell in the grid. In Medium difficulty, AI chooses between Easy difficulty and Hard difficulty for each move based on a 50/50 chance.
Strategy's source Flexible Strategy Use in Young Children's Tic-Tac-Toe by Kevin Crowley, Robert S. Siegler
Licensed under GPL-3.0-only, by Yamin Siahmargooei.
What's New in v1.0.22
Imported from the F-Droid repository index.
Version history
Jun 30, 2026 · 2.2 MB · Android API 24–37 · code 22
Imported from the F-Droid repository index.
SHA-256 237f4e7ab406ca4479d15711fe2d20c4608792f8c3f584dbaf9e511c4722b27f
Jun 5, 2024 · 1.7 MB · Android API 24–34 · code 18
Imported from the F-Droid repository index.
SHA-256 d81292cd346dcb23b04488bca400ca95af0f6eaa4aefefd31f847fe535cbdc17
Dec 25, 2023 · 1.8 MB · Android API 24–34 · code 14
Imported from the F-Droid repository index.
SHA-256 7c342b4690bb41ede8508f886033a7ec6dca6a4dd79181cd8481f91f98b1b01e
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
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 io.github.yamin8000.dooz 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, 1.0.18 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Dooz 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 Dooz, and a listing is removed when the evidence for it stops holding up.
Get Dooz
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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
237f4e7ab406ca4479d15711fe2d20c4608792f8c3f584dbaf9e511c4722b27f
Signing certificate
c5fc36a2d18057155a471f456216f0b1f07755f33147f938c92ea6275dced4d2
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Previous Versions
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