Click the cat. Shop by clicking the shop button. Each +1 equals 15 clicks to spend. (CPC stands for Clicks per Click.)
UPDATE: Added save and load codes (@29caden suggested it), fixed clones, and shop I saw a lot of YouTube videos about game developers try to make a game in a short amount of time. Thanks to @Seon8 for the idea of a clicker game. https://scratch.mit.edu/discuss/topic/618702/?page=1