OSRS Loot Simulator

How the loot simulator works

Pick a monster, a boss, a chest or an activity and open it as many times as you like: one at a time to watch each kill, or thousands at once to see what a long grind gives. The simulator keeps the whole run, so the table fills up and the collection log fills in as you go.

A drop table is rolled the way the game rolls it. Zulrah rolls its main table twice a kill and its pet once, so a kill can give two items from the main table. Vorkath always gives its bones and hide, and its head is certain on the 50th kill if it has not come before. Barrows rolls once for each brother killed plus one, and each roll either gives a piece of equipment or a stack from the chest's other loot, sized by your reward potential. A raid first rolls for a purple from your points, and only when none comes do you get standard loot.

For the Corrupted Gauntlet alone, the CG loot simulator opens the same chest from the same seed and adds the hours the runs took, your seed goal against the Gauntlet calculator's average and the chest's value at high alchemy prices.

For a boss whose loot is split by damage, such as the Hueycoatl, the Hueycoatl calculator gives your chance of each unique and what a kill pays at your team size and share of the damage, without a simulation.

A drop is not always the quickest way to an item. The ironman item sources calculator puts every monster that drops it beside the shops, skills, minigames and spawns that also give it, with the time each would take your account.

Lucky or dry?

Every unique the source can give shows its chance, the average number of openings it takes, the opening it came on and the share of players who would have had it by then. At 1 in 512, 18% of players have the drop by 100 kills, so getting it at kill 100 is luckier than four players in five. A unique still missing shows the same figure for the openings so far. The dry calculator takes any kill count you already have and gives the chance of a drop by then exactly, without a simulation.

Seeds and shared runs

The seed sets every roll of the run. Open 10 and then 90, or 100 at once, and the loot is the same. Copy the link and anyone who opens it sees your run again, opening for opening, as long as the settings are the same. A new seed starts a fresh run.

What the loot is worth

Each item is valued at its Grand Exchange price: the instant-sell price, the instant-sell price after the 2% tax, or the instant-buy price. Coins count at face value and platinum tokens at 1,000 coins. An item the Grand Exchange does not trade, such as a pet or a clue scroll, counts as nothing. Over many kills the value an opening settles near what boss gp per hour counts a kill to be worth.