In Diablo III: Reaper of Souls, players have two Game Mode options to play a game. You can choose the linear progression Campaign Mode, or you simply choose the non-linear new Adventure Mode. Now what exactly is Adventure Mode? It is Awesomeness-in-a-nutshell. Ok, that's a generic answer, so let's go into a more detailed one. When you select Adventure Mode, you are given the option to play in private or public games. The text displayed says: "Explore the world of Sanctuary and complete Bounties and Random Dungeons to earn awesome loot!"