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