https://www.polygon.com/2018/1/22/16919682/dragon-ball-fighterz-loot-boxes

Dragon Ball FighterZ is the latest game to feature loot boxes, but Arc System Works developed a system that won’t annoy its fans — or bully them into dropping real-world cash.

In the game, there are two currencies: Zeni, which you earn through in-game actions, and Premium Z Coins. Zeni can be racked up pretty fast in just about any mode, but Premium Coins are different. As the game describes it, Z Coins are earned when you get a duplicate item from a Z Capsule, the game’s version of a loot box. You can rack up a lot of Zeni just by enjoying the game at your own pace, and within the first few hours of playing, I made enough Zeni to buy a few dozen Z Capsules.