Towers (sometimes referred to as Precursor Towers) are nodes on the Atlas that can reveal a large area on the Atlas around it once completed. Additionally, after traversing it successfully, precursor tablets can be inserted into a tower to add additional Encounters to surrounding maps. If multiple towers are close enough together it is possible to overlap a single map with several tablet effects.
Each tower can grant the effect of up to three tablets, and cannot be further modified or replaced once activated. Each tower can only be used once. The number of tablets you can insert depends on the number of modifiers on the waystone used to clear the tower map:
The number of Towers on the Atlas has been reduced drastically, but each one is now more powerful.
Tablets (except Overseer Tablets) inherently add twice as many mechanics to Towers. Using higher tier Waystones in Towers also now increases the number of mechanics applied by Tablets. By Tier 15 the bonus is double, allowing a single Tablet to now add four times as many things as before.
Tower Maps can now spawn with all extra content mechanics, including Bosses.
BreachstoneBreachstoneThe Twisted Breachlord reaches out from his Domain with maddened agony and anger.Travel to the Twisted Domain by using this item at The Realmgate. Can only be used once.
An Audience with the KingAn Audience with the KingOn the edge of existence, he watches with ire.Travel to the Crux of Nothingness by using this item at The Realmgate. Can only be used once.