4 stars: Very appealing \
3 stars: Very addictive in the beginning. It balances ads with rewards. Unfortunately, there is a bottle neck where the player can no longer upgrade anything, but the levels get harder. This has become a turn off, as it seems to be a subtle push to get the player to turn to micro transactions rather than ads. I've decided to uninstall at this point because it went from challenging and fun to frustrating and unrewarding.
5 stars: Very entertaining without pushy ads. You get to excavate for dinosaur bones and they will be assembled into the corresponding dinosaur skeletons. You make money from visitors and upgrade your excavation powers using the money. The forced ads only come when you keep excavating, and it's only a static photo ad. Else, if you keep watching video ads for the increased visitors in between excavations, the static ads won't appear.
5 stars: Well-optimized clicker, feasible to progress without paying (which should be a default for all free games, but most push it too hard against the freemium model), nice concept. Although, the offline (when not using app) coin collection is far too slow. You'd accumulate more coins playing 10 minutes than you'd collect overnight offline (6-7 hours).
5 stars: Very good game, I really enjoyed the number and variety of dinosaurs. I hope that in a future update there are a few other kinds of skeletons, like wooly mammoths, saber tooth tigers, or even prehistoric humans. Basically, after c...