It's not a game. It's a animal pictures' slide show with questions, designed with Ren'py. The answers are given to you automatically, so there is no interaction on our part. A question is repeated twice and some of them don't even make sense. After seeing all the questions, in 5 minutes, you get 4,501 out of 5,000 chivos. That's right, a fake game for achievements, even if some of them don't work, but with the "Low Confidence Metric" they are worthless. The title, 18+, can also be misleading. (At the beginning, I thought of a adult-only Hentai game...) In short, avoid.