You will be given a message that will need to be decoded. There are at least 2 layers of encodement, so it may take a while to find it out. The first person to post the correct answer in the comments will be able to determine what game I will make after this one. Good luck to all participants.
In case anyone is wondering, the term ARG stands for "Alternate Reality Game". This may seem difficult but it's actually very simple as long as you can figure out what cipher to use.