Lemon Bay Playhouse is launching a fundraising campaign to help pay off the mortgage on its annex building. For the first phase of the campaign, LBP will present the Pulitzer Prize-winning play, “The Gin Game,” at 7:30 p.m. Saturday, Jan. 18, and 2 p.m. Sunday, Jan. 19. Veteran actors Rita Corn and Jack Rabito have volunteered to produce and perform the play. The entire proceeds from these two performances will go to the campaign to pay off the annex mortgage. Tickets are $18.