Reactoonz uses a 7×7 grid instead of spinning paylines. Five or more touching alien symbols form a winning cluster. Those aliens disappear and fresh symbols fall into the empty spaces, so one paid round can contain several cascades.
The flux capacitor is the Wild. Winning clusters also charge Gargantoon; a full charge sends the oversized character onto the grid for a chain of Quantum features. That meter is the main distinction from an ordinary cluster slot. Read the cluster and charge indicators together, rather than expecting a payline result after each drop.
Related games
Compare GEMiX and Moon Princess for a different rule set.
Source: Play'n GO game information.
