This article is about the Invention mechanic. For the level of an item's combat properties, see Equipment tier.
Check invention interface

Checking an augmented weapon; experience is displayed, with a pink bar to show progress to the next level.

Equipment level is an attribute of augmented items. Once an item has been augmented it will gain experience and advance levels when it is used in combat. Levelling an item increases the experience and materials received when disassembling it. The maximum level achievable is dependent on research.

Equipment experienceEdit

Equipment experience is gained by using augmented items, and, much like skills, the item will level up when it reaches specific experience milestones. Equipment experience is received and stored to at least two decimal places, but is truncated to an integer when displayed in the interface.

Equipment experience is capped at 1,000,000.

Combat equipmentEdit

An augmented item receives a proportion of the base combat experience that the player earns when killing a monster. Unlike combat experience, equipment experience is awarded per hit. The total experience x that a monster granting y combat experience (excluding Constitution) gives for depleting its life points from full to 0 is:

x = 
0.06y \approx 6\% & \text{2-handed weapons} \\
0.04y \approx 4\% & \text{1-handed main-hand weapon} \\
0.04y \approx 4\% & \text{Body- and leg-slot items} \\
0.02y \approx 2\% & \text{Off-hand weapons and shields}

Thus, for example, killing one abyssal demon gives:

  • 661 experience to the skill being used
  • 218.1 experience to Constitution
  • 26.4 to any augmented armour and main-hand weapon you are using
  • 13.2 to any augmented off-hand weapon you are using
  • 39.6 to any augmented two-handed weapon you are using

Equipment experience is awarded each time damage is dealt while wielding/wearing the augmented item(s). The amount received each hit is a proportion of the monster's total available experience relative to the damage of the hit - for example, a hit of 1700 damage to an abyssal demon (which has 8500 life points) grants 20% of the total experience for the demon (as noted above), as 1700 is 20% of 8500.

The enlightened perk increases the equipment experience gained for the item(s) it is added to.


Augmented tools receive a portion of the base experience received for gathering resources. Item experience x gained from a resource that gives y experience roughly follows:

x = 
\frac{\lfloor 118 \times y \rfloor}{1000} \approx 11.8\% & \text{Fishing, Mining, Woodcutting} \\
\frac{\lfloor 65 \times y \rfloor}{1000} \approx 6.5\% & \text{Firemaking} \\
\frac{\lfloor 78 \times y \rfloor}{1000} \approx 7.8\% & \text{Smithing} \\

Based on samples the augmented item experience has at least 3 digits not visible for the user, similar to skill experience which has 1 digit not visible to the user.

For example, each large crystal urchin fished grants 350 Fishing experience and 41.3 item experience

Effects that increase the 'base experience' (i.e. do not count as 'bonus experience' for the popup) also increase the amount of equipment experience gained per action. Such effects include:

The enlightened perk also increases the experience gained for each resource gathered.

Skilling tablesEdit


Levelling a piece of equipment from level 1 to level 10 increases the amount of Invention experience that is contained within it, increasing each time its level increases. Although items can be levelled up to a maximum of level 20 at 99 Invention additional item effects are not gained after level 10, and additional Invention experience is not gained from siphoning an item after level 12. Any previously unlocked item effects are carried over each time an item's level increases, unless otherwise stated. Levelling a tier 80 item would work as follows:

Invention experience (tier 80) Item effects (disassembly)
Disassembly Siphon (GP/XP)
1 0 0 N/A N/A
2 1,160 9,000 Disassembling this item has a 50% chance to return installed gizmos.
3 2,607 27,000 Disassembling this item gives double materials.
4 5,176 54,000 9,000 27.50 Disassembling this item never gives junk.
5 8,286 108,000 27,000 9.17 This item drains 10% less charge when used.
6 11,760 144,000 54,000 4.58 Disassembling this item gives triple materials.
7 15,835 198,000 108,000 2.29 Disassembling this item gives an extra random uncommon material.
8 21,152 270,000 144,000 1.72 Disassembling this item returns all installed gizmos.
9 28,761 378,000 198,000 1.25 Disassembling this item gives quadruple materials.
10 40,120 540,000 270,000 0.92 Disassembling this item gives the maximum extra Invention XP and may give you inspiration.
11 57,095 378,000 0.65 N/A
12 81,960 540,000 0.46
13 117,397
14 166,496
15 232,886
16 320,080
17 432,785
18 575,592
19 753,631
20 972,440

Disassembling an item gives different experience based on its tier, with the base value being for tier 80. Tier 90 items give 15% more experience; tier 70, 15% less.

\text{XP} & = \text{Base XP} \times \left (1 + 0.015 \times (\text{Tier}-80) \right) \\
& = \text{Base XP} \times \frac{3 \times \text{Tier}-40}{200} \\

While crystal tools are normally tier 70, using a crystal tool siphon grants experience as if they were tier 90 instead - around 35% more experience.

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