Reactoonz is an online video slot game developed by Play'n GO. It features a vibrant, cartoonish theme with various cute alien characters. Players aim to create winning combinations by matching symbols on a grid, with cascading wins that can lead to multiple payouts in a single spin. The game includes unique features like Gargantoonz, which can transform symbols and enhance winning potential. Additionally, players can trigger special bonuses and free spins, adding excitement to the gameplay. With its engaging graphics and dynamic mechanics, Reactoonz has become popular among online casino enthusiasts.