In honor of Memorial Day Weekend in the US, I've enabled double experience in Marble Blast Fubar from 9:00 PM GMT on 05/28/2016 (Saturday) through 11:59 PM GMT on 05/31/2016 (Tuesday)! You will receive twice as much experience by completing levels!
This will also serve as the first official test of the double experience functionality - if you notice any bugs or issues, please reply and indicate your Operating System (Mac / UNIX / Windows) so I can iron out any bugs that may present themselves.
Note - there could be issues contacting the double experience service on first logon - You can check your Profile in-game, and the status text below the Experience Bar on the "Overview" tab will change color and indicate if double experience is in effect. If not, try logging out and back in to reset the flag.