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