Public Event

Seismic Activity

Last updated: 2026-05-09

Table of Contents

Overview

Seismic Activity is triggered by launching a nuke at Abandoned Mine Shaft 2 near Nuka-World on Tour. The event centers on a boss fight against the Ultracite Titan at the Nuka-Launcher coaster.

Before the boss appears, players must clear ultracite crystals from the coaster area using melee or unarmed attacks — bullets do not work on them. The fight then moves through four timed phases, each requiring more crystals to be destroyed before the Titan can take damage.

Walkthrough

1Launch a nuke at Abandoned Mine Shaft 2 to trigger the event.
2Travel to the event area near the Nuka-Launcher coaster.
3Before the Ultracite Titan appears, destroy the 11 ultracite crystals around the coaster. Crystals cannot be destroyed with bullets — use melee or unarmed attacks.
4Once the crystals are cleared, the Ultracite Titan emerges.
5The fight has four timed phases. In each phase, destroy the marked ultracite crystals first to make the Titan vulnerable, then deal enough damage before the timer runs out.
6Phase 1: destroy 3 crystals and deal at least 20% damage.
7Phase 2: destroy 4 crystals and deal another 20% damage.
8Phase 3: destroy 5 crystals and deal another 20% damage.
9Phase 4: destroy 6 crystals, then finish off the Ultracite Titan.
10Watch for Ultramites, mole miners, and constant ground tremors throughout the fight.
11If a phase timer runs out, the Titan burrows away and the event fails. Complete all four phases to finish the event.