Tic-tac-toe Collection

  • FREE Tic-tac-toe game
  • Thousands of game variations
  • Cross-platform WiFi multiplayer
  • AI with variable difficulty
  • Single player campaign
Prime on iOS in 0.19

0.19 finally brings Prime support to iOS. This includes all the current features of Prime, including the removal of ads, unlimited campaign skips, two extra icons, and two extra colors.

If you're interested in trying it as soon as possible, please join the beta on Testflight. Purchases made on Testflight versions will not actually charge you, but will also not be available outside of Testflight versions.

Monday, November 25, 2019 Mon, Nov 25, 2019 25 Nov '19
Klein bottle in 0.18

The next version of Tic-tac-toe Collection will include support for playing on different topologies. Other games have done this before but probably not with so many options. To be specific, the options available will be:

The ones that have horizontal and vertical versions are basically the same, but it does make a difference for how Drop Four is played.

  • A cylinder is formed by repeating the play space in one direction, and a torus is formed by repeating it in both directions.

  • A Möbius strip is like a cylinder, but each repeat is flipped (so a horizontal Möbius strip repeats horizontally, but each copy of the board is flipped vertically relative to its neighbours).

  • A Klein bottle is like Möbius strip, but also repeats (normally) in the opposite direction.

  • The real projective plane is like a Möbius strip in both directions. That is, vertical copies flip horizontally and horizontal copies flip vertically.

That last item, the real projective plane is interesting and led to a new game option being added. One of its odd features is it makes all the corner squares diagonally adjacent to themselves. This means, for instance, you can get three-in-a-row with just two moves. This seemed odd to me so I did a bit of investigating. The corners are not really adjacent to themselves, but just appear that way because trying to render the real projective plane on a flat surface is very misleading. The end result, is a new game option:

“Allow cell reuse” determines whether the same cell can be used more than once in the same line. For example, imagine playing on a 3×3 torus with a winline size of 4. If you get three-in-row horizontally, it would appear you have also have four-in-row (and five-in-a-row and six-in-a-row etc.) if you allow cells to be reused. Whether allowing it or not makes for better gameplay or not, I don't know yet. But the option is there.

Sunday, October 13, 2019 Sun, Oct 13, 2019 13 Oct '19
Game design
Prime available on iOS
Monday, November 25, 2019 Mon, Nov 25, 2019 25 Nov '19
Dropping Support for Android KitKat
Monday, September 23, 2019 Mon, Sep 23, 2019 23 Sep '19
iOS now available
Tuesday, April 9, 2019 Tue, Apr 9, 2019 09 Apr '19
0.19 Release notes
Monday, November 25, 2019 Mon, Nov 25, 2019 25 Nov '19
0.18.1 Release notes
Thursday, October 24, 2019 Thu, Oct 24, 2019 24 Oct '19
0.18 Release notes
Tuesday, October 15, 2019 Tue, Oct 15, 2019 15 Oct '19
Torus Games by Jeff Weeks
Saturday, October 12, 2019 Sat, Oct 12, 2019 12 Oct '19
Tic Tac Toe Free by Optime Software
Thursday, September 6, 2018 Thu, Sep 6, 2018 06 Sep '18
Tic Tac Toe by Wintrino
Monday, September 3, 2018 Mon, Sep 3, 2018 03 Sep '18
Introducing topology
Sunday, October 13, 2019 Sun, Oct 13, 2019 13 Oct '19
Modifying games
Wednesday, January 2, 2019 Wed, Jan 2, 2019 02 Jan '19
Sneak peek at 0.13
Wednesday, September 19, 2018 Wed, Sep 19, 2018 19 Sep '18
Updated server for estimating fairness
Thursday, September 19, 2019 Thu, Sep 19, 2019 19 Sep '19
Automatic blog deployment
Sunday, August 25, 2019 Sun, Aug 25, 2019 25 Aug '19
Building local network play
Monday, October 1, 2018 Mon, Oct 1, 2018 01 Oct '18