What’s the most addictive mobile game you have played?

最近几年我玩过几款抽卡游戏，一种电子赌博游戏。大部分的抽卡游戏是可以免费玩的，可是如果玩家愿意氪金，就获得更多机会抽奖。《七龙珠爆裂》是我玩过的抽卡游戏之一，我觉得它是最令人上瘾的抽卡。虽然游戏很简单，但是每个任务有攻击敌人的功效比较强的角色；为了容易完成任务，诱惑玩家花钱。

In recent years I've played a few kinds of gacha games, a type of electronic gambling game. The majority of gacha games can be played free-to-play, but if a player is willing to spend money in-game, they obtain more opportunities to pull for prizes. Dragon Ball: Dokkan Battle is one of the gacha games I've played; I think it's the most addictive gacha. Although the game is very simple, every mission has characters that are more effective at defeating enemies; it entices players to spend money in order to complete tasks.