Dev Blog: Revealing Drop RatesThread is sticky

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Oct Member 2010


Posts: 43Bronze Posts by user Forum Profile RuneMetrics Profile
spRAWleR said:
I don’t believe for a second these drop rates lol

350 telos kills, doing 100->400 streaks, nothing

And in the rax department, on 850 kc with only 4 full legs, which is around 1/70 drop rate

1/40 might be pushing it

To add salt in the wound, I’ve maged most my kills, and the lay 3 hilts have been eyes

It's called RNG.

14-Oct-2017 09:56:32

Oct Member 2010


Posts: 43Bronze Posts by user Forum Profile RuneMetrics Profile
XJ9 said:
doge wowe said:
EMPER0R95 said:
when exactly was the signet droprate changed?

The signet has always been 1/50
it was confirmed a few months ago by some JMod on Reddit
It being 1/64 was just a common misconception i guess

Timbo just said that it was 1/64 at first, but changed at some point in time (probably 2013-2014) to 1/50 due to the lack of ascensions entering the game. My rate is actually 1/62.9 so lol (in 4155 kills).

Actually, it's always been 1/50.

14-Oct-2017 09:57:59

Oct Member 2020


Posts: 6,588Rune Posts by user Forum Profile RuneMetrics Profile
People widely misunderstand probability.

I think the secrecy was better, although in the past I would've like a little more transparency about when drop rates were drastically changed.


In fact, Timbo, you're contributing to that misunderstanding with this bit of your original post:
"not knowing exactly when you were 'owed' a drop"

And I think you know better. Poor phrasing, perhaps.

Edit 2:

As I started reading through, good to see he's already been taken to task for this. First by Fox McCloud, pg. 3.

14-Oct-2017 18:46:30 - Last edited on 14-Oct-2017 18:53:47 by Ghosttalon



Posts: 169Iron Posts by user Forum Profile RuneMetrics Profile
Regarding Aod Drop rates
Is it 1/5000 any intricate chest meaning 1/20,000 for a specific intricate chest?

edit: Could you also clarify the weapons, "1/1,000 chance for a unique item like Wand of the Praesul or Imperium core" does this mean 1/2000 for the wand of praesul specifically? I know I'm being pedantic but it's for the wiki.

16-Oct-2017 10:47:02 - Last edited on 16-Oct-2017 21:19:57 by Clestial



Posts: 45Bronze Posts by user Forum Profile RuneMetrics Profile
Pixel Green said:
Next week we're going to be revealing Raids, God Wars Dungeon 1, Kalphite Queen and Chaos Elemental!!

Just curious. Will you also be revealing the Chaos Elemental drop rates for F2P players or are those drops not accessible by F2P players?

17-Oct-2017 04:52:07 - Last edited on 17-Oct-2017 04:53:19 by Qqqq222

Mod Timbo

Mod Timbo

Jagex Moderator Forum Profile Posts by user
Hey everyone,

This week on "Drop Rates Revealed!" we're going to be talking about Liberation of Mazcab (Beastmaster Durzag, Yakamaru), God Wars Dungeon 1,Kalphite Queen and Chaos Elemental! We hope that you enjoy the post.

Liberation of Mazcab (Beastmaster Durzag and Yakamaru)

We'll start by explaining the basic structure and order of the droptable.

1. If you have less than 5 effigies, there's a small chance to drop one.
2. Then we add all guaranteed drops, which are charms (or Airut bones for Durzag).
3. We then add some supplies, which can be either Saradomin Brews, Super restores, or Eeligator. (Bonus fun fact: in code, Eeligator is named "Raid Overpriced Fish")
4. Then we try to give you an Achto piece, which I'll explain in more detail below. If an Achto piece is dropped, the following steps are all skipped.
5. If you don't get Achto, there's a 1 in 20 chance to get a codex. If you get a codex, the following steps are all skipped.
6. If you don't get Achto or a codex, we then give you some Teci, to let you save up for a comparable reward.
6a. If you don't already own Lil' Tuzzy, Durzag rolls a 1 in 512 chance to drop the pet. Getting Tuzzy doesn't cause the next steps to be skipped.
6b. Durzag also rolls a 1 in 500 chance to drop Razorback Gauntlets. This is the same chance as regular Airut. If Durzag drops Razorbacks then the following step is skipped.
7. We then pick some items off of a more traditional droptable. Yakamura will drop approximately twice as many items than Durzag from this table.

There are a couple of exciting numbers in there, but we all know they're not what you're really here for. Let's talk about how Achto works.

When you kill one of the two bosses, the game decides which piece of Achto you're attempting to roll using two factors:

1. Which combat style you used to inflict the most damage. This determines which style of Achto the games tries to give you first. For example, taking a Magic approach on Beastmaster Durzag will increase your odds of getting Primeval equipment.

2. Which boss you killed. This determines which slot of Achto armour the game tries to give you first. Beastmaster Durzag starts with boots, Yakamaru with gloves.

If you already own the Achto version of the armour in question, the game will choose another style in the same armour slot; for example, Primeval boots instead of Teralith boots. If you don't own Achto or either of the two "off styles", the game does a coin flip to decide which style to use.

If you own all styles within that armour slot, it will move on to the next armour slot.

Each boss and equipment slot has a priority.

Durzag - Priority 1
Yakamaru - Priority 2

Boots - Priority 1
Gloves - Priority 2
Helmet - Priority 3
Legs - Priority 4
Chest - Priority 5

The game first tries to give you an item of a priority matching the boss'. If it can't do that, it'll try to give you one with lower priority. If it can't do that, it then starts testing each higher priority slot in order.

However, if you own a full set of Achto in each combat style, we throw all the rules out the window and just pick an item at complete random.

When the game has decided which piece of Achto it might give out, it then rolls to see if you win it. This time we've got a three step process.

1. Each boss has a Generous and a Harsh chance. If the priority of the item is less than or equal to the priority of the boss, the game uses the generous chance. If the priority is higher, the game uses the harsh.

The Generous and Harsh chances for each boss are as follows:

Beastmaster Durzag:
Generous chance = 1 in 35
Harsh chance = 1 in 55

Generous chance = 1 in 30
Harsh chance = 1 in 50

2. If you're wearing Luck of the Dwarves or an equal effect, the game improves your chance by one.

3. After that, owning an inferior version of the exact piece of armour (including style) you're rolling for will halve the chance value. This also applies if you already own every Achto set.

The resulting number becomes the roll which determines whether or not you receive the item.

Here's an example:

You kill Yakamaru as a mage wearing Luck of the Dwarves. You own all Achto gloves. You also own Achto Primeval (magic) boots. You own inferior Teralith (melee) boots.
1. The game tries to give you gloves, but you already own them all.
2. The game looks for a lower priority item to give you and finds you don't own all boots.
3. You already own the magic boots, but you don't own either of the off-styles. The game flips a coin between ranged and melee. For the sake of illustrating mechanics, we'll pick melee boots, but picking between the two was a fair 50/50 unaffected by you owning the inferior melee boots.
4. Boots have a lower priority than Yakamaru's priority (which is two) so we use Yakamaru's generous roll of 30.
5. Luck of the Dwarves improves your chance to one in 29.
6. You own the inferior version of the melee boots, so we further half this roll and round down to 14.

God Wars Dungeon 1

All bosses in God Wars Dungeon 1 follow the same drop rate as their items. These are as follows:

2/128 chance to obtain a unique item (equal chance at any unique if you roll)
1/128 chance then a 1/4 chance to obtain a Godsword hilt (if you fail the 1/4 you'll get 19,501-21,000 coins instead)
1/128 chance then a 1/2 chance to obtain a Godsword shard (if you fail the 1/2 you'll get 20,500-21,000 coins instead)

The bodyguards that accompany each boss in God Wars Dungeon 1 also have a chance to drop unique items. These work slightly differently:

1/128 chance to roll on to the "bodyguard unique" table.

Each god then has a different chance to obtain a unique from their bodyguards. These are:

1/320 chance for a specific unique from Saradomin bodyguards
1/384 chance for a specific unique from Bandos/Armadyl bodyguards
1/512 chance for a specific unique from Zamorak bodyguards

You then have a X/Y chance at any uniques. X is the number of unique items that can drop and Y is the bodyguard drop table chance. If you don't get a unique drop then you'll get 1,000-1,500 coins instead.

There's no difference in drop tables between normal mode and hard mode in God Wars Dungeon 1; the only difference is the Soulstones. The chance to obtain a Soulstone from a hard mode boss is 1/25.

Kalphite Queen

1/128 chance for Dragon Chainbody
1/128 chance then 1/2 chance for Dragon 2h Sword (For the Exiled Kalphite Queen it is just a 1/128 chance)
1/128 chance for the Kalphite Queen head trophy

Chaos Elemental

1/128 chance to obtain a Dragon 2h Sword
1/128 chance access the Ancient Warriors' drop table

Rolling to access the Ancient Warriors' drop table will open up a new table where you can try to obtain unique equipment. The full table is as follows:

1/224 chance to obtain a specific unique drop (44/224 chance to obtain any Ancient Warrior's equipment)
100/224 chance at 3 random herbs
10/224 chance at a weapon poison
70/224 chance at four 4 dose antipoisons

That's it for this week's drop table reveals! We hope that you enjoyed them. Next week we'll be talking about The Magister, Barrows, Queen Black Dragon and the Dagannoth Kings!

Mod Deg, Mod Timbo and the RuneScape Team
Mod Timbo
| Senior Game Designer & Balancer
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20-Oct-2017 11:05:01 - Last edited on 20-Oct-2017 20:05:08 by Mod Timbo

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