Cookie Clicker

The OG Clicker game, the clicker game to rule them all. Cookie clicker is arguably the best web game of all time, being the father to a whole genre of games, those being clicker games. Cookie clicker is genuinely such a good web game, with so much content, so many achievements, and so much more to do than just click. While the game does get boring at points, and feels slow, it really picks up and the ascension aspect of it is awesome. The one big hole in it's amazing catalogue of achievements and completion are the level 10 building achievements. To sum them up, it takes 2 full years to finish all of these achievements. Pretty much making it impossible to finish. I hate them.