Prisoners, guards and robots brawling in a cell block, from the Lands of Jail key art

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A prisoner in an orange jumpsuit chained to a chair, from the Lands of Jail key art
The bastion robot

12of 31 events

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The alliances on your server fight over 20 strongholds around the Supreme Prison.

Shadow StrongholdSiege

Event · Alliance territory

Shadow Stronghold Siege

The alliances on your server fight over 20 strongholds around the Supreme Prison. A 2-hour contest decides who holds each one, and every stronghold you hold earns season points.

Hold a stronghold 30 minutes in a row, or 60 minutes in total, to win it. Large Iron Prisons are worth 4 season points, Dark Ironholds 2 and Basic Dark Ironholds 1.
Weekly
Plus five extra sessions in a new server’s first month.
2 h
Contest Phase.
8
Sessions in one season.

How it works

  • •Registering: the Leader or R4+ registers strongholds and picks 3 of 5 start times. The time most alliances on the server pick wins.
  • •Strongholds you held last session are registered for you (up to 14) and don’t count against the 2 extra you may register. You don’t need a territory link.
  • •Wardens who join a new alliance on contest day can’t take part. Rejoining the same alliance is fine.
  • •Winning a stronghold: hold it 30 minutes in a row or 60 minutes in total. If nobody does, the longest total hold wins.

The 20 strongholds

StrongholdHow manySeason pointsHurricane Corps garrison
Large Iron Prison4, around the Supreme Prison4345,000 troops · 44.3M Power
Dark Ironhold82169,400 troops · 12.6M Power
Basic Dark Ironhold8, at the map edges1169,400 troops · 8.5M Power

One alliance holding all 20 would earn 40 points per session. Old mails still call this event “Iron Prison Siege.”

Rewards

AwardDark IronholdsLarge Iron Prison
Siege Award (the Warden who beats the Hurricane Corps)12
Unity Award (every member)12
Merit Award (leaders hand out)40100
Occupant Chest (every member, on control)12

Leaders also hand out a pool each session. At first it includes 640 Vivian shards, 420 Inata shards, 300 Teleports, 1,280 Universal Speed-ups (1 h), 1,200 Legendary Arrest Guides and 1,200 War Skill Books; later, Forticlad Cores and Solo Module Chests.

Season ranking gives the “Order Supervisor” skin: 1 point = 3 days (+200 Diamonds), 2–9 = 7 days, 10–58 = 14 days, 59–142 = 30 days, 143+ = 60 days. 175+ also adds 2,000 Diamonds, 20 Advanced Supply Cards and 20 speed-ups (1 h).