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