Your goal is to open the chest...

Download the game : https://www.dropbox.com/s/puic3wqqy121avb/World%20in%20the%20void%20-%20v1.0.jar?dl=0

Download Java : https://www.java.com/fr/

Dowload code sources : https://www.dropbox.com/sh/9ht1w3n62p5qfrs/AACoj1jLKTLFgw8QY_7C7MYca?dl=0