Adventure Mode

"Greetings, nephalem. Though you have defeated many powerful foes, there remains much to be done. This is a map of Sanctuary and the realms beyond. From here, you can select a region to view it in greater details. This map displays the different places you can go within the region. Locations marked by an exclamation point have bounties for you to undertake. Bounties are the many tasks and challenges which require your attention. In return for completing them, you will be rewarded with powerful items. Good luck, nephalem. Sanctuary has need of you."

- Tyrael introduces the mode to the player. Adventure Mode is a game mode in Diablo III, introduced with the Reaper of Souls expansion. It provides Bounties and Nephalem Rifts as endgame content.

Adventure Mode is unlocked for all characters by completing Act V with any character, regardless of the character level, and once unlocked, can be used by any character of any level of the same type (Hardcore/Softcore and Seasonal/Normal) on account. None of the Campaign Mode storyline quests are available in this mode; instead, special zones can only be found in Adventure Mode:
 * Treasure Realm
 * Ruins of Sescheron and Eternal Woods
 * Royal Quarters
 * Greyhollow Island
 * Guild Hideout
 * Shrouded Moors and Temple of the Firstborn
 * Realms of Fate

It is designed to be light on story content, based more around replayability.

There are three map-levels in Adventure Mode: global (a map of Sanctuary), act/region level, and radial (the map of a player's current location). The player has one more layer of automap (world) that allows moving between all five acts at will. All waypoints are unlocked and can be accessed at any time. Horned icons represent bosses and key icons represent Keywardens. Some of the waypoints are misplaced to prevent easy access to bosses.

Artisans are slightly relocated in some Acts. A Wardrobe is also available in each town. Kadala and Kanai's Cube can only be found in Adventure Mode.

In the Switch version of Diablo III: Eternal Collection, Adventure Mode is available from the outset.

Trivia

 * The idea for Adventure Mode came from requests to use waypoints to move freely between acts.
 * The mechanic of one Act giving increased rewards for Bounties existed at one point, removed in later patches: it involved one Act being selected as default starting Act for all logins into the game, changing every hour. Even after becoming no longer relevant, it still follows this pattern.