I think you know what an advent calendar is. If you don't, then it is basically a calendar, where you open a little ''window'' every day from December 1st to December 24th, and every day you get a little gift (for example a mini chocolate). ||instructions|| - Click the ''window'' to open it. - A challenge will show up. - Do a challenge every day. - There's a hidden clicker game -click the little ''window''.
