Eliminate multiple monsters in less than 1 second

Eliminate quadcopter

Gather up energy when there is less than 5% left

Make the first purchase

Bloom 10,000 flowers.

To invent the Global Internet

To invent the First Transistor

To invent a Wireless Communication

To invent the Steam Engine

To invent a Printed Books

To invent the principle of the alphabet

To invent a wheel

Good job! Completed all tasks!