Fractured Archive loot calculator

How the unique roll works

Every room awards 100 contribution, split by damage, except Ocellus, who awards 300 across his phases. A full raid is 700 contribution. The team then rolls a base 1 in 14 unique chance. Each player past a duo multiplies that chance by an extra 4%, so a 3-man team rolls 1/14 × 1.04 and an 8-man team rolls 1/14 × 1.24. Your share of the 700 decides whose name the unique is in.

A death subtracts 10% of your expected contribution before that share is worked out. In a duo the expected share is 350, so one death costs 35 contribution. Orion, elite clues, Archivist's Folio and elemental fragments do not use contribution. They are skipped if the raid ends in a cabbage.

Unique weighting

• Rondache, 5 in 15.
• Zorya's Tome, 4 in 15.
• Horn of Bran, 3 in 15.
• Ascension crossbows, 2 in 15.
• Obligator, 1 in 15.

Fractured Archive loot FAQ

What is the unique rate in The Fractured Archive?

The team rolls 1 in 14 on a completed raid with no group-size bonus. A 3-man team is 1/14 × 1.04, a 5-man team is 1/14 × 1.12, and an 8-man team is 1/14 × 1.24. Your percentage of the team's 700 contribution is your share of that roll.

How do deaths change the purple?

Each death removes 10% of the contribution you were expected to have, which is 700 divided by the team size. The calculator subtracts that from your points, then divides what remains by 700.

What is the Orion pet rate?

Orion is 1 in 750 on a completed raid. Team size, contribution and deaths do not change it. An elite clue is 1 in 10 before combat-achievement modifiers, Archivist's Folio is 1 in 15, and any elemental fragment is 1 in 20 with duplicate protection.

Are these rates final?

They are the rates Jagex published on 3 November 2026. Jagex said a light balance pass could follow, so check again after a loot update. For expected GP, use the gold per hour calculator.