Zoltun Kulle brought a second trio of build items to the game with Kanai's Cube, where you can equip three legendary powers which you've previously extracted from their items. But Seasons were introduced a little over a year ago with patch 2.1, and they brought with them the first build trios to remember -- legendary gems.
After multiple attempts to get into a Torment VII game on the Diablo 3 Patch 2.3.0 PTR, I made a bet with myself -- if I start the game queue-in now, maybe I could raid through the entire X-hour queue and then finally the queue will pop when I'm done playing World of Warcraft with my guild.
So you've been persuaded to try Diablo 3 (maybe you read about the basics). You've loaded into the game, and now you're faced with the question of what game mode to play. There are many modes of play in Diablo 3 and some of the modes refer to what content you're playing rather than what difficulty.