The game offer nudge feature. The reels 2 and 4 will move up or down to help you get better winnings combinations. I tried this only for a few spins and I did not see any big difference. Later I turn it off because it cost additional 0.4€. I think it cost too much money.
The bonus intro offer different features. You can won prizes or maybe even free spins. I got this bonus game only once and I got only some prizes at the end of level 4. I like that the bonus has 4 levels, on each level you spin the wheel and with a little of luck you can receive free spins with sticky wilds.
I never got sticky wilds free spins here, but I saw some screenshots of this feature. The payouts were not so good as I expected. They were over x 100 bet, but I expected much more. Maybe the pay outs for wild symbols could be set even higher.
I like base game because there are expanding wild symbols. Every time when you get the wild symbol on the reel, it will expand to entire reel. My best result was two expand wild reels and win around x 20 bet.
I think this could be a good game. But I do not like that the free spins feature is into bonus game. I had no luck and I won only cash prizes. It would be better if there could be free spins feature with scatters, when you get three or more of them you win free spins.
Otherwise I will rate this game with 7 stars. I think it could provide some good winnings, especially during free spins feature.