What combinations are required to unlock the Space Exploration group without hints in Doodle God?

To unlock the Space Exploration group in Doodle God without using hints, you need to create specific elements that act as gateways to this group. The Space Exploration group is unlocked by creating the Rocket element. Here are the steps and combinations required to achieve this:

First, you need to create the Metal element. Combine Fire and Stone to get Metal. Next, create Energy by combining Air and Fire. With Metal and Energy, you can create the Machine element. Once you have Machine, combine it with Air to create the Airplane element. After that, combine Airplane with Rocket Fuel to create the Rocket element. To make Rocket Fuel, combine Oil and Energy.

Here is the step-by-step process: Combine Fire and Stone to get Metal. Combine Air and Fire to get Energy. Combine Metal and Energy to get Machine. Combine Machine and Air to get Airplane. Combine Oil and Energy to get Rocket Fuel. Finally, combine Airplane and Rocket Fuel to get Rocket. Creating the Rocket element will unlock the Space Exploration group.

This progression relies on experimenting with basic elements and building up to more complex ones. Pay attention to the combinations you discover along the way, as they may help you unlock other groups or elements. If you get stuck, try revisiting earlier combinations or experimenting with different element pairs. Patience and persistence are key to progressing in Doodle God.