This guide will provide everything you need to know about Gacha in ARK: Extinction.
Gacha is the unique creatures in the game; you can find them in the caverns under the wastelands of Ark extinction. To tame them, you will need to give them food, and it can be anything like rocks, crystals, metals, etc. The favorite food of this creature is snow owl poop.
While taming it, you also have to make a saddle; it will be available at level 38. You need to have titan fiber and hyde to manufacture it, as shown in the image below.
Gacha is a very slow creature, and the regular attack is also slow. If you put items into its inventory, it will eat them, and when you open the context wheel of gacha you will see a label called production. From there, you can easily select different materials on the production wheel.
The production wheel can convert those things it eats and convert it into the material you select. Each gacha has a different production wheel; it produces it by creating a gacha crystal on the back of the gacha, as shown in the image below.
After he drops off the material, you need to lick it up and get the resources out of it; you need to go in your inventory and consume the crystal.
You can also find some rare materials which are hard to find in the game easily.