12 logic puzzles, one app
No guessing. Just logic.
Sudoku, Crowns, Bridges and nine more, each built so that every board has exactly one answer you can reason your way to. No lives, and no way to lose a board.
The games
Each family is a way of thinking, and each wears its own colour in the app.
5 games
Fill a grid by working out what must go where.
3 games
Draw routes, join things up, make it all flow.
2 games
Match, clear and flood a board of colour.
2 games
Narrow it down until only one answer is left.
Ways to play
An adaptive path
The main line. It picks the next game and how hard it should be from how your last puzzles went, so the difficulty follows you instead of a menu.
Four games a day
The same four puzzles for everyone, rotating through all twelve games. This is the one place you pick the difficulty: Easy, Medium, Hard or Expert, game by game.
Every game, in order
Each game as a numbered list, played one at a time. Pick a game you want to get better at and work down it.
Fair by construction
Every puzzle is checked before it ships: exactly one answer, and a line of reasoning that reaches it. A board that needs a guess is treated as a bug, not as a hard puzzle.
No mistake limit, no failed boards, nothing taken away. A puzzle is only ever unfinished, and you can take as long as you like.
The puzzles are in the app and your progress stays on your phone, so a train tunnel is no reason to stop.
Free on Android, with an optional one-time upgrade.
