How do I find the really rare and expensive treasures?
The deeper you dig, the higher the spawn rate for ultra-rare minerals and mysterious artifacts! However, surviving the deep layers requires serious gear. Spend your coins heavily on upgrading your Backpack Capacity, Stamina Max, and Shovel Power. Once you're fully upgraded and have the Jetpack for a quick escape, you can safely mine the deepest depths where the real money is!
Does upgrading the shovel actually make a big difference?
A massive difference! Upgrading your shovel not only increases your digging speed but significantly expands your dig radius. A basic shovel only breaks one block slowly, while a high-tier shovel smashes through huge chunks of earth instantly. It's the most important upgrade for deep-core mining.
What do I do when my backpack is totally full?
Stop digging immediately! Use the ladders (or your Jetpack) to fly back up to the surface. Walk over to the vendor to sell all your mined goods, completely emptying your backpack and earning your cash. Then, jump right back into the hole to resume your excavation!