Jumbo Joker slot has a variety of different bonuses and extra spins. Show me Bonuses. For instance, the gambler that sees 3 Jokers on the field gets Mystery Prizes. These include bright red berries, watermelons, lemons, grapes. No information is available for this page. These include bright red berries, watermelons, lemons, grapes. These awards. For instance, the gambler that sees 3 Jokers on the field gets Mystery Prizes. . No information is available for this page. Jumbo Joker is a double 3-reeled slot with 5 paylines featuring traditional slot machine symbols. Jumbo Joker slot has a variety of different bonuses and extra spins. These awards. Jumbo Joker is a double 3-reeled slot with 5 paylines featuring traditional slot machine symbols. A list of the latest no deposit bonus codes updated daily from the popular casinos with regular offers for new and existing casino members.