Complete unlocked Lost Sectors to collect cache rewards and cube-related progression items.
Global English service; live global client as of October 2026.
WHERE & HOW TO FARM
Where to farm
Ark > Lost Sector.
Lost Sector is an exploration activity that combines route planning, environmental puzzles, and cache collection. Available sectors unlock through Campaign progression. Search each open area, interact with its route mechanics, and collect caches to obtain the rewards shown by the activity, including cube-related items where available. Sector completion is finite; revisit only when a new area opens or a part remains unexplored.
Unlock a Lost Sector area through Campaign progression.
Bring a squad capable of handling the sector’s encounters.
Have time to explore the displayed map and route mechanics.
Open Lost Sector and choose an unlocked area that is not fully cleared.
Review the map and identify visible paths, obstacles, switches, and unopened routes.
Move through the sector while engaging enemies that block progress.
Interact with route devices and environmental mechanics as they appear to open paths.
Search accessible branches for caches and collect their displayed rewards.
Complete the remaining route and verify the sector’s clear status and reward record.
Use earned cube-related items through the relevant progression menu when available.
Farming tips
Recheck branches after using a switch or route device; newly opened paths can lead to missed caches.
Use the sector’s visible mechanics as the route guide instead of treating it as a straight combat stage.
Repeat, collect and use
Each sector is a one-time exploration clear for its caches and completion rewards. Repeat only to finish missed areas or when Campaign progress unlocks another sector.
Common mistakes
Rushing past side paths; inspect branches for caches before advancing.
Leaving route devices unused; interact with the visible mechanisms when progression stalls.
Expecting a cleared sector to produce recurring drops; move to a newly unlocked area for fresh exploration rewards.
When to stop or switch
Stop when the sector is marked complete and its accessible caches are collected; return after unlocking another area or identifying a missed branch.
