Show me Bonuses. 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. . For instance, the gambler that sees 3 Jokers on the field gets Mystery Prizes. 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 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 is a double 3-reeled slot with 5 paylines featuring traditional slot machine symbols. These awards. No information is available for this page. These awards. These include bright red berries, watermelons, lemons, grapes. Jumbo Joker slot has a variety of different bonuses and extra spins.