Features:

Fully Networked: Server Authoritative Quests and Dialogues
Shared Quests: Play Quests together online or locally with friends via the Shared Quests system
Quest/Dialogue Designers: Use the designers to create your own quests and dialogue
Works with C++ and Blueprint: Easy to use Blueprint nodes for BeginQuest, RestartQuest, etc. Grab all failed, succeeded, in progress quests etc.
Supports complex Quests: Create quests with multiple different ways to complete, multiple different endings, etc.
Dialogue Conditions: Conditionally Add or Remove dialogue options from a dialogue
Dialogues and Quests work together seamlessly: Start a quest when a dialogue option is selected, or create quests where the player has to select a dialogue option as a step in the quest
Save System: Narrative remembers every task the player has completed, every dialogue line ever played, and every quest the player had in progress. Version: 2.6.1 (5.2) Home Page: https://www.unrealengine.com/marketplace/en-US/product/narrative-quest-and-dialogue-editor