Tycoon is the ultimate track tool for Unreal Engine!
Allows you to snap and bend geometry. Perfect for buildling rollercoasters, race tracks, pipes and more!
Overview: http://cgtoolsmith.com/tycoon/
Trailer: https://www.youtube.com/watch?v=u6vct65VD5M
Find the tool by selecting the Tycoon mode: https://dev.epicgames.com/documentation/en-us/unreal-engine/level-editor-modes-in-unreal-engine?application_version=5.1