Chest (Barrows)

ClosedOpened

Chest
Released								9 May 2005 (Update)
Members								Yes
Quest								No
Location								Barrows crypt
League region								Morytania✓
Options								Open
Examine								A large stone chest.
Map
Advanced data
Object ID								20723
Link								MOID

This chest is located at the centre of the tunnels beneath the crypts of the Barrows brothers. It serves as the rewards chest for the Barrows activity.

Upon opening the chest, the Barrows brother whose crypt the player entered will appear and start attacking the player, if he did not already appear while travelling through the tunnels. It is not required to kill the Barrows brother in order to loot the chest. However, the chance of getting Barrows equipment from the chest increases as more brothers are killed, and players will not be able to receive equipment belonging to brothers they did not kill. Furthermore, it is required that you kill at least one enemy of any kind in order to be eligible for any possible loot from the chest.

If the player's inventory is full upon looting the chest, excess items will be dropped to the ground.

During the His Faithful Servants miniquest, players will also receive a strange icon. If the player's inventory is full, or gets filled by other items received as reward, when they would be due to receive an icon, the icon will not be received and the player will need to complete another run.

Drop rates are estimated based on 128,000 samples from the Drop Rate Project, unless otherwise cited.

Note that the loot chances below are accurate for a Barrows run with all 6 brothers slain and with full potential (1012 points). To accurately calculate your specific situation, please make use of the Barrows calculator.

The chance to receive one or more items is about 1/15 per chest.

Players who completed the hard Morytania Diary will receive 50% more runes. The base amount without the diary completed is listed below.

• There is initially one roll at the drop table.
• Each additional brother killed grants an additional roll at the drop table, to a maximum of seven total rolls.

• Each brother killed has his associated items added to the possible rewards.
• First, the Barrows equipment is rolled against. The chance of getting a Barrows item is shown in fig.1. Or, in tabular format to the right.
• If the Barrows item chance is successfully hit, one of the available Barrows items is chosen at random - each part has equal chance, but once chosen it will not be chosen again on future rolls.

Where P is the drop chance and N is the number of brothers killed.

• If the Barrows item chance is not met, an additional measure called reward potential is calculated as shown below.
  • In short, reward potential is the sum of all the combat levels of the monsters killed, capped at 1000 — including the brothers (all six have a combat sum of 656). The number of brothers killed times two is then added, giving a total maximum reward potential of 1012.
• A roll is performed for a value between 1 and your reward potential (each inclusive). The result then determines what item is awarded, and in what quantity.

Let be the combat level of the ^th monster killed. Then, the reward potential is

where

and

• The chance of receiving at least one piece of Barrows equipment is approximately 1/15.01^[a] if you kill all six brothers. This chance is unaffected by the rewards potential that is built by killing other monsters in the crypt. The chance of receiving a specific piece of equipment is approximately 1/350.14.^[b]
• As it is possible to receive more than one piece of Barrows equipment per chest, the average number of Barrows pieces per chest is 7/102 (~1/14.57).
• In order to receive a piece of Barrows equipment, the corresponding brother must be killed before the chest is looted. Thus, if you wanted a piece of Guthan's equipment, you would have to kill Guthan before you are eligible to obtain his equipment. Therefore, it is impossible to acquire Barrows equipment if no brothers are slain, although coins, runes, or bolt racks may still be awarded.
• For every brother killed, you get an extra roll for rewards; so if all six brothers are killed, it is possible to obtain up to seven pieces of Barrows equipment.
• It is possible to get multiple items from the same brother, but it is not possible to receive multiple copies of the same item.
• Killing all of the brothers is not required to receive loot; however, not killing all brothers decreases your chance of receiving a Barrows item.
• When hunting for your last few uniques, killing all 6 of the barrows brothers compared to just one increases your chance to receive a specific piece of loot around x2.24 times. Therefore, if your run times to kill all of the brothers are x2.24 longer than to kill a singular brother, you should consider only killing a specific brother to increase loot chances.

Below are various values expressing your chances of getting the certain item(s) and the expected number of items given chests opened. These numbers assume you kill all 6 brothers each time. For the explicit formulas in terms of chests see Talk:Chest_(Barrows)#Calculations

Notably, the expected number of chests for completing:

• One of any set is 313.36^[f] chests.
• A specific set is 728.09^[g] chests.
• All 6 sets is 1319.26^[h] chests.

v t e Barrows
Barrows brothers	Ahrim the Blighted Dharok the Wretched Guthan the Infested Karil the Tainted Torag the Corrupted Verac the Defiled
Monsters	Bloodworm Crypt rat (Giant) Crypt spider (Giant) Skeleton
Rewards (Barrows equipment)	Ahrim Set Hood Robe top Robe skirt Staff Dharok Set Helm Platebody Platelegs Greataxe Guthan Set Helm Platebody Chainskirt Warspear Karil Set Coif Leathertop Leatherskirt Crossbow (Bolt rack) Torag Set Helm Platebody Platelegs Hammers Verac Set Helm Brassard Plateskirt Flail
Music	Dance of the Undead Dangerous Way
Related	Strategies Strange Old Man Crumbling tome Strange old lockpick Barrows chest His Faithful Servants The Fall of Six

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