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How to Change Application Constants

Most tunable app-wide values live in lib/constants/settings.dart, in the AppSettings class.

lib/constants/settings.dart — AppSettings class

Board sizes​

static final List<MatrixSize> matrixSizes = <MatrixSize>[
  MatrixSize(size: 3, title: 'Classic Mode (3x3)'),
  MatrixSize(size: 4, title: 'Advanced Mode (4x4)'),
  MatrixSize(size: 5, title: 'Expert Mode (5x5)'),
];

Rounds per match​

static List<GameRound> rounds = [
  GameRound(digit: 1, name: 'One'),
  GameRound(digit: 3, name: 'Three'),
  GameRound(digit: 5, name: 'Five'),
  GameRound(digit: 7, name: 'Seven'),
];

Multiplayer coin entry fees​

static const List<int> multiplayerFees = [10, 25, 50, 100];

Per-turn timer​

The countdown isn't a single fixed constant — it scales with board size via turnDurationFor():

/// 3x3 -> 20s, 4x4 -> 30s, 5x5 -> 40s.
static const int _baseTurnTime = 20; // for the smallest (3x3) board
static const int _turnTimeStep = 10; // extra seconds per size beyond classic

static int turnDurationFor(int boardSize) {
  final int classicSize = matrixSizes.first.size; // 3
  final int steps = (boardSize - classicSize).clamp(0, 1 << 30);
  return _baseTurnTime + steps * _turnTimeStep;
}

Adjust _baseTurnTime and _turnTimeStep to change the timer for every board size at once.

Matchmaking search timeout​

static const int multiplayerConnectionSearchTime = 60; // in seconds

Default skin, app name, support contact​

static const String appName = 'TicTacToe';
static const String defaultLanguageCode = 'en';
static const String supportPhone = '9876543210';
static const String supportEmail = 'abc@gmail.com';
static final Skin defaultSkin = skins.first;

supportPhone / supportEmail are shown on the in-app Contact Us screen.

Other topics with their own dedicated pages​

  • Leaderboard score values — see Leaderboard Score.
  • Skins list and pricing — see Skins.
  • Coin shop packs — see Coin Purchase.
  • Bonus mini games (Hextris, Clumsy Bird, Pacman) — AppSettings.moreGames, same file.
  • Background music / sound effects — see Change Music.

Privacy Policy / Terms & Conditions / About / Contact copy​

This app's legal and info pages are static in-app text, not external URLs — edit them in lib/constants/legal_content.dart. Play Store / App Store listing URLs (used for "Rate Us" / share) are in lib/constants/app_links.dart.