From a CBS Press Release:
GAMESHOW MARATHON, hosted by Emmy Award-nominee Ricki Lake ("The Ricki Lake Show") and based on the hit U.K. game show "Ant & Dec's Gameshow Marathon," will be broadcast twice weekly for two weeks beginning Wednesday, May 31 (8:00-9:00 PM, ET/PT) and Thursday, June 1 (8:00-9:00 PM, ET/PT) and the following week Wednesday (6/7) and Thursday (6/8) before settling in to its weekly regularly scheduled Thursday (8:00-9:00 PM, ET/PT) time period on June 15.