Dig into the deepest parts of the ground and collect rare minerals and crystals! Get better resources for deeper research by upgrading your digging machine. Remember to be careful and to refuel your machine if you want to reach the greatest depth. The deeper you get the better rewards and scores you will get!
1. Find place with red stones (here are grey but in version which is available are red)
2. Destroy all fields near base
3. Build new base
Better video coming soon :)