Slingo Classic was developed to commemorate the 20th anniversary of the existence of slot-bingo games. Theme. Slingo Fluffy Favourites, Slingo Rainbow Riches, and. Double Angels. ACS. Slingo Classic 20th Anniversary. Slingo Cascade 2. . Manufacturer. Approval Date. ACS_ Slingo Classic 20th Anniversary by Slingo · Wild Space. ACS_ Dec ACS. THEME ID. Slingo Starburst Xxxtreme Welcome offer 50% bonus up to £50 plus 20 spins on 9 Masks of Fire on 1st deposit. Bust The Bank. Play for Free. Play for Mega Fire Blaze: 3 Wizards by Playtech · Divine 9.