Gargantoonz

Gargantoonz, developed by Play’n GO, features a 7×7 grid layout with a vibrant Sci-Fi alien theme, showcasing colorful creatures reminiscent of Reactoonz and the experiments conducted in Dr Toonz’s lab. Wins are created by forming clusters of five or more matching symbols either horizontally or vertically. When a winning cluster is formed, those symbols disappear, allowing new ones to cascade into the grid. Each cluster win helps fill an Experiment Charger, and once enough symbols are gathered, players can trigger one of three special experiments: Gamma Ray Burst, Black Hole, or Supernova. Each of these experiments introduces wild symbols to the grid in unique ways—some may stick, while others may move. Additionally, a Gargantoon Charger tracks the successful experiments. Once all three experiments are completed, the Gargantoonz feature activates, bringing forth Gargantoon Wilds that evolve through stages, starting from smaller 1×1 wilds and merging into larger 2×2 and 3×3 wilds to enhance wild coverage. The game also includes a Fluctuation feature, where a random symbol is selected each spin; if this symbol is part of a winning cluster, one or two “Quantum Wilds” will appear in the spaces left by the removed symbols. On spins that result in no wins, a Discharge feature may randomly distribute several Quantum Wilds across the grid. Instead of a traditional free spins bonus round, the game focuses on its experiment system and the evolution of Gargantoonz.

You can play it for real money.