3x Catch starts on a five-by-four slot grid with cash-valued fish and angler collectors. Coloured bobbers can open free spins with corresponding net modifiers: extra rows, more fish or doubled angler multipliers. Additional bobbers during the bonus award extra spins. The expanded bonus layout differs from the base grid, so comparing this game with a fixed ten-line fishing slot should account for both the collector mechanic and the changing bonus arrangement.
To compare related slots formats, read the rules of 4 Fantastic Vikings Go Ice Fishing and Fishin' Trip.
The library also explains the difference between lines, ways and clusters to help put these mechanics in context.
Source: published game information.