Mocard
Local multiplayer card game (LAN)
Kotlin 
Jetpack Compose 
Material 3 
Ktor Room Coil 
Mocard is a local multiplayer color card game, inspired by My Vote's architecture (embedded Ktor server + QR-code client). The host starts a WebSocket server on port 8766, generates a QR, and other players scan to join. All rules are configurable from settings: initial cards, +2/+4 stacking, "MONO" call, penalties, special restrictions. Even the image of EVERY card can be swapped from the gallery — gameplay is decoupled from artwork. Stack: Kotlin + Jetpack Compose, Ktor, Gson, ZXing (QR), Coil, Room.
Features
- Embedded Ktor LAN server (host) — port 8766
- QR join: client scans, done
- mDNS discovery of the server on the network
- Fully configurable rules (initial cards, stacking, MONO, ...)
- Per-card image swap from gallery
- Canonical state only on host, private hands per device
- Game history (Room)
- Foreground service to keep the connection alive
Configuration
- Initial cards per player (1–15)
- Special-card frequency: low / med / high
- +2 on +2 / +4 on +4 / mixed stacking
- Forgotten-MONO penalty (card count)
- +4 restriction (only if you don't have the color)
- Match-winning score
- Deck composition (colors, number range, duplicates)
Technical prerequisites
- Android 8.0+ (API 26)
- 2+ devices on the same Wi-Fi network
- Permissions: Wi-Fi state, Camera (QR), Photos (card images)
- ~80 MB storage
[ QR code available at publication ]
Coming soon