In order to get precious time you need to suck it out of some humans with your mighty hourglass!

A and D: Move around the screen

Left-Click: Suck humans upwards in order to catapult them into your hourglass

Right-Click: Suck the catapults of the humans upward. Now you can drop them so they get crushed

But be aware! If you sacrifice the kings, fewer humans spawn and you get fewer time!

Now you can compete against your friends and see who can score more sacrifices!