These games exist for the sole purpose of giving you ads.
The title says it all. Short 30 seconds of gameplay, then boom, you can watch ads to increase your stats, then after that you can watch an ad to get a new “hand” and after that you can watch an ad to double, triple, quadruple etc your earnings that round, and if you say no thanks to those you’re served with another ad, after that you get back on the main menu where you can watch ads to increase your stats and all sorts of things. STOP MAKING THESE GREEDY DEVELOPERS RICH. These types of games are just built using the same idea with small little things changed about them to keep your troglodyte brain engaged to watch ads.