Alien Fruits 2 uses refilling reels with multipliers that combine during a winning sequence. Four or more spacecraft scatters open fifteen free spins. In that bonus, the display splits around a portal and active multipliers remain attached to it; three or more further scatters add five spins. The sticky bonus multipliers distinguish the sequel from a plain fruit slot with fixed lines. Chance x2 and Buy Bonus are paid options, not additional free awards.
To compare related slots formats, read the rules of All Lucky Clovers and Gates of Olympus.
The library also explains the difference between lines, ways and clusters to help put these mechanics in context.
Source: published game information.
