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