[kibwen]

There are no gacha mechanics in this game. There is a mechanic where you throw some dropped monster parts into a device in order to receive random building materials, but monster parts and device parts are already abundant, drop rates are basically equal for all parts, and, most crucially, there's no way to spend real money on any of this. It's not there to facilitate gambling, it's there to incentivize creativity in your builds by giving you parts that you might not otherwise go out of your way to acquire or use.