Chogan

Chogan is a collection of small, finishable games in a single app. It ships with eighteen 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 * Pasur — the Persian fishing card game against three levels of AI, with surs and the classic scoring * Mahjong Solitaire — three layouts including the classic turtle, every deal solvable, with hints and shuffles * Chess — against the AI on three levels or two players on one phone, plus Lichess puzzles 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, Simplified Chinese and German 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.