Chogan

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

The games:

* Tower Defence — four towers, six 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
* Hokm — the Persian four-player card game: you and your partner against two AI rivals
* Block Drop — falling blocks: a 40-line sprint or a 100-line marathon
* Gomoku — five in a row on a 9, 13 or 15 board, against three levels of AI or two players
* Go — 9×9 Go with automatic counting, against three levels of AI or two players
* Way Out — send every arrow off the board in a working order, three hearts a level, levels without end
* Blackjack — closer to 21 than the dealer, ten-hand matches with no betting
* 8-Ball Pool — pot your group, then the 8, with real table physics, against three levels of AI or two players
* Snooker — a red, then a colour, then the colours in order, with 6, 10 or 15 reds, against three levels of AI or two players
* Gridlock — slide the cars out of the way and drive yours out of the lot, one drag a move, levels without end
* Chain Reaction — add orbs until cells burst and chain across the board; 2 to 4 players on one phone or against bots
* Ludo — roll, come out on a six, capture and race your tokens home; quick or full game, 2 to 4 players or against bots
* Snakes and Ladders — roll, climb the ladders, slide down the snakes and reach 100 first; 2 to 4 players or against bots
* Darts — 501 or 301, three darts a turn, finish on a double; against a bot or two players
* Bowling — ten frames, swipe to bowl and bend it for spin; alone, against a bot or two players
* Sliding Puzzle — slide the numbered tiles back into order, from 3×3 to 5×5, in as few moves as you can
* Jigsaw — drag the pieces into the frame, 12 to 150 of them, on Persian patterns and scenes drawn in code
* Checkers — 8×8 draughts with forced jumps and kings, classic or Spanish rules (flying kings), against the AI at three levels or two players

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 eighty awards
* Stats and a profile
* Persian, English, Simplified Chinese, German and Spanish 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.

Bug fixes:
- The navigation bar follows the app's dark theme
- Darts: the third dart and the opponent's throws stay readable, and every dart shows its score
- Dark theme: buttons and selected options are easier to read
Improvements:
- Blackjack: cards are dealt from a shoe and turn over
- Minesweeper: flags drop in, mines go off one by one, and a cleared board waves
- Checkers: optional capture
- Profile: the version and commit link to GitHub