Cookie Clicker

Cookie Clicker, Not the first idle game, but perhaps the most popular. Funny, even if it barely qualifies as a game.
Cookie clicker is the incremental game launched in the year 2013 by French Programmer Julien Orteil.
The game is about clicking on the more giant cookies in the game and earning one cookie for each click, and these obtained cookies can use to build the buildings that produce cookies again. There are upgrades available to improvise the efficiency of the clicks and the facilities.
The gameplay involves clicking on the cookie available on the left of the game screen to earn the first cookies in the building, which would produce more cookies. The cookies collected can be used to purchase more buildings like grandmas, cursors, and farms, which would help them make more cookies.