Dooz
Dooz is a free, open-source game for Android. A Tic-Tac-Tao clone, a simple pen-and-paper game. It has 107 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.
github.com/yamin8000/Dooz (opens in a new tab)
Data as of from the GitHub API and the F-Droid index; description from the project's repository or F-Droid listing. Report an error
About Dooz
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.
Privacy and F-Droid
F-Droid builds Dooz from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
No anti-features flagged on the latest F-Droid build.
Screenshots
Screenshots from the app's F-Droid listing.
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Is Dooz free and open source?
Yes. Dooz's source code is public on GitHub under the GPL-3.0-only license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.
How do I install Dooz?
You can install Dooz from F-Droid (package io.github.yamin8000.dooz); the links are on this page. Its GitHub repository also publishes releases (latest: 1.0.24).
Is Dooz still maintained?
The repository's most recent commit was on Oct 9, 2026. Its F-Droid listing was last updated on Oct 15, 2026. appsgit only lists apps whose repository had a commit in the last six months.