The Final Countdown Online Slot

It's impossible since it is a random occurrence where the whole row of 2 or more reels will be the same symbols.

Yes, you can find it on the top of the spin button, where you can set it up to 100 spins and stop as well.

The bonus feature will trigger when you hit 3 or more scatter symbols. After that, you will choose from 2 modes, "the countdown" and "heading for venus" free spins.

You can get either 8 or 15 free spins once you hit the bonus features, and it depends on what bonus feature you will get.