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