A simple app with clever gameplay. A collection of eight 2D games and two 3D games that are well implemented, supporting human vs human or human vs AI (with difficulty levels).

The key feature differentiating this from many other games is the addition of different topological options. The exact options vary between games, but most include a torus and a Klein bottle.

The special thanks section include a mention of the National Science Foundation, and to be honest, the presentation of the app certainly has an… academic feel to it. But what it lacks in visual style it makes up for in speed, cleanness, and just being very to-the-point.

As a final note, it is available on Android, iOS, Windows and macOS (I tried the Android version), is free, and has no ads.

Good things

• Many games.
• Many options.
• Actual 3D.
• Localized in 15 languages.
• Quick AI.
• Small and quick to load.

Bad things

• Not particularly polished (but apparently reliable and robust).

Game features missing from Tic-tac-toe Collection

• Topology options.
• 3D tic-tac-toe.
• Other games quite unlike tic-tac-toe.

App features missing from Tic-tac-toe Collection

• Localization.
• Sound effects.

This app is available for iOS and Android. This is a review of the Android version.

Reasonable permission requests:

• Photos/Media/Files.
• Wi-Fi connection information.

Unreasonable permission requests:

• Device ID & call information.

Refusing to install an app because of unnecessary permissions may seem harsh, but is something I think more people should do.

Sadly however, in this case the app is probably not doing anything wrong, but is merely old. It supports Android all the way down to 1.5. In Android 1.5 all apps automatically had access to device ID and call information, therefore all such apps have to require that permission when installed on newer versions of Android, even if they don’t access any of it.

The solution is to release a new version of the app targeting 1.6 and above, which would not need those permissions (the 1.5 version could be left as is and would still be available). But… the app was last updated in June 2013 so that seems unlikely.

A very simple version of Tic-tac-toe by Wintrino. You can play two player against another human, or against the AI with one of four difficulty levels. There are no gameplay options available, but there are a few settings to make the game a little nicer to play (turn off welcome screen and turn off “quit game” warnings).

There is a single persistent banner ad, and an interstitial video ad every few games.

Good things

• Quick to load.
• Quick AI.
• Pretty detailed statistics (albeit with typo - “Tota” instead of “Total”).
• Real privacy policy.

Bad things

• No animation.
• No game options.

Game features missing from Tic-tac-toe Collection

• Sounds effects.
• Clear stats.

App features missing from Tic-tac-toe Collection

• Share app with friends.
• Rate on Google Play.