Ching Chong - How many thumbs together?

At the beginning of the game you and your opponent have 2 thumbs.
Your mission is to get rid of both thumbs.
Every round you can show how many thumbs you want.
If you're on move, you guess how many thumbs will be show a whole.
If you guess it, you are hiding on thumb.
If you want to play online with a friend, you must be on the same wifi.

Icons from http://icons8.com
Images from http://freepik.com

Ching Chong is open-source: https://github.com/MFori/ChingChongGame