Three dots game has a an interesting feature as multiplayer option. You can play three dots game over WiFi connection between two devices. Just turn on device WiFi and connect to am available WiFi. All online players will be found automatically. But devices must be registered on same WiFi. Selecting one player will start the game automatically. Network connections are real tricky heŕe. Players are searched through udp and and assigned random port. I will write later about networking. I just want to say you will enjoy it most.