Gigantoonz is another slot in the Reactoonz series from Play'n GO. Gigantoonz is another slot in the Reactoonz series from Play'n GO. Casino welcome bonus. Check out our diverse portfolio of slots and find out what's happening in the industry. Casino welcome bonus. Casino bonuses. Casino welcome bonus. Here Betsson Casino · Crypto casino. It supports many languages. Casino bonuses. Gigantoonz is another slot in the Reactoonz series from Play'n GO. Discover the Gigantoonz slot machine by Play'n GO, which offers exciting features, mega symbols, multipliers, and a possible max win of x. Casino bonuses. Here Betsson Casino · Crypto casino. Here Betsson Casino · Crypto casino. Gigantoonz is one of the recent games in the series of slots about Energoonz and Betsson is the website operated by BNL Group. Discover the Gigantoonz slot machine by Play'n GO, which offers exciting features, mega symbols, multipliers, and a possible max win of x. It supports many languages. Gigantoonz is one of the recent games in the series of slots about Energoonz and Betsson is the website operated by BNL Group. Discover the Gigantoonz slot machine by Play'n GO, which offers exciting features, mega symbols, multipliers, and a possible max win of x. . Who is Play'n GO? We supply online slots to the casino industry.