The theme is 7 World Wonders of the Ancient world. As I know, today there is only one of these seven objects that were once considered as world wonders and that is the Great Pyramid in Egypt.
With 3 or more scatter symbols you can come to a free spins feature. You get a total 7 free spins. The first spins in the feature comes with a 1 x multiplier, the second with a 2 x multiplier and finally the seventh with 7 x multiplier. Also the free spins can be re - triggered but only for 3 times. Similar rules for the free spins feature I've seen in some other NuWorks games. The second feature is the already mentioned classical bonus in this review. This is a pick up bonus. You have drawings of the 7 wonders of the world and 3 clicks on them. Also you can get a bonus clicks.
As I'm pretty careful with games that I have not ever played before, here I have started with a minimum bet per spin i.e. with a bet of 0.5 dollars. The game looks great, with great animations, but after more than 100 spins I did not have any decent wins. But, just when I though to left the game, I came to the pick-up bonus where I won about 23 dollars. Then I have increased the bet on 1 dollar per spin and I have continued playing. Again, I had a longer period without some bigger wins and then… 3 scatter symbols and free spins feature. My overall wins in the free spins was close to 100 x bet i.e. I won $ 98 on a bet of one dollar. All in all the Ancient Wonders is a game that I'm going to recommend it. 7/10