Click the shop to open it. Click on the circles in the shop to buy stuff. When you click the button, there's a 2-second cooldown. Just so ya know. :)
Oh man.... This entire project started from the mouse pointer effect whenever you press a button. :) P.S. check out @Eevee_Plays_Softball. She's the one who helped me with the aesthetics. Also, there's a chance that 2 crates spawn at the beginning of the game instead of one! And, unfortunately, the max conveyor speed is SO fast, that it sorta spawns 1 crate, stops for a second, and then spawns 1 again. The way to solve this is to upgrade spawn speed.