Chogan

Chogan is a collection of small, finishable games in a single app. It ships with fifteen games, and new ones arrive as updates to the same app.

The games:

• Tower Defence — four towers, three fixed maps plus a daily map, twenty waves and an endless mode
• Sudoku — four difficulties with a guaranteed unique solution, notes, hints and a daily challenge
• Minesweeper — no-guess generation, four sizes, chording and flags
• Dots and Boxes — two players on one phone, or three levels of AI
• Backgammon — two players or three levels of AI, dice that undo can never re-roll, gammons count double
• Mancala — Kalah rules, two players or three levels of AI
• Nonogram — three sizes, every puzzle solvable by logic alone
• FreeCell — the classic numbered deals, never the one unwinnable deal, unlimited undo
• Reversi — two players or three levels of AI
• Nine Men's Morris — two players or three levels of AI
• Peg Solitaire — leave one peg, in the centre for a perfect game
• Battleship — against an AI that only knows what you would know
• Bridges — three sizes, every puzzle with exactly one solution
• Code Breaker — three levels, colour-blind friendly
• Breakout — twelve fixed levels, three balls each

Around the games:

• A daily challenge that is identical on every device, with no server at all
• A weekly offline league with five tiers
• Over sixty awards
• Stats and a profile
• Persian, English and Simplified Chinese interface with light and dark themes

On privacy:

• The only permission the app declares is vibration. Not even internet access
• No ads, no in-app purchases, no analytics, no tracking
• Every asset ships inside the package. Even the sound is generated with WebAudio, so there is not a single audio file in the build
• Progress is stored on the device only, and Google auto-backup is turned off

Free and open source under the MIT licence.