Attention, Lost Ark players: Rimeria is besieged! That’s why today’s patch is titled Rimeria Besieged. If you don’t know where Rimeria is, look for the signs saying “WARNING: SIEGE AHEAD” and just proceed through inference. That’ll guide you right to where you need to be. And you’ll want to be there, since taking part in the nine-week event means tackling a dungeon and a raid with the former for up to four players and the latter for eight.

Clearing the content rewards Tier 4 honing materials, Tier 4 Ancient-grade accessories, and other useful resources on top of those. The patch also includes the new Combat Analyzer tool so you can break down your performance with hard data as you play, something that all of the optimization-minded players out there will no doubt be delighted by.

Servers went down at 4 a.m. EDT this morning and are expected to remain offline for at least eight hours, so you’ve got some time to fill. Why not check out the full patch notes for all of the details for both the event, the Combat Analyzer, and balance tweaks?

Rimeria Besieged Release Downtime

A new threat looms over Rimeria. Downtime will begin on September 17 at 1 a.m. PT (8 a.m. UTC) and is expected to last 8 hours.

This update introduces Assault: Rimeria, the Combat Analyzer, the Honor System, and more. Read on for the full list…

— Lost Ark Game Status (@LAGameStatus) September 16, 2025