to advance in it Oobletsyou will have to find obsidiana rare crafting material.
Oobsidian is used for creating and updating OobcoopsYou need to expand your ooblets storage space and create a separate farm.
Obsidian can be found in a number of ways. It’s rare to find sitting on the ground in Badgetown. You can also trade in 100 Wishies through the Wishy Well, but since Wishies are also used to level up characters, it’s best to keep them. The best way to find tons of Oobsidian is break all bricks on your farm.
Switch your farm to farming mode by pressing Q. Just select the rock and press the spacebar three times to open the rock. It takes a lot of energy, but you’ll eventually find Oobsidian sooner rather than later. More stones will appear on your farmland the same day, so you don’t have to worry about running out of them.
Placing Shimmering Ooblets in an Oobcoop will occasionally drop Oobsidian as well.
Source : polygon.com