Quality

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Quality is a stat: An item's quality is how well-made it is.

Many crafted items and some structures have a stat called quality. This stat influences various attributes of the item, according to the tables below.

Effects of quality

General

Effects that are common to several, or all, types of object.

Quality	Beauty Factor	Market Value Factor	Deterioration Rate Factor	Psychic Sensitivity Offset Factor
Awful	-0.1	0.50	2.00	0.50
Poor	0.5	0.75	1.50	0.66
Normal	1.0	1.00	1.00	0.83
Good	2.0	1.25 (max +500)	0.80	1.00
Excellent	3.0	1.5 (max +1000)	0.60	1.16
Masterwork	5.0	2.5 (max +2000)	0.30	1.32
Legendary	8.0	5 (max +3000)	0.10	1.50

^A This multiplier will not be applied to negative beauty scores.

^B This only applies to items with a buff specifically noted as a "Psychic Sensitivity Offset", such as an eltex helmet , not items that just offset psychic sensitivity, like the psychic foil helmet or prestige marine armor .

Weapons

In addition to the general effects listed above, quality also affects several factors unique to weapons, both ranged and melee.

Quality	Melee Damage Factor	Melee AP Factor	Ranged Accuracy Factor	Ranged Damage Factor	Ranged AP Factor
Awful	0.80	0.80	80%	90%	90%
Poor	0.90	0.90	90%	100%	100%
Normal	1.00	1.00	100%	100%	100%
Good	1.10	1.10	110%	100%	100%
Excellent	1.20	1.20	120%	100%	100%
Masterwork	1.45	1.45	135%	125%	125%
Legendary	1.65	1.65	150%	150%	150%

Apparel and Utility

In addition to the general effects listed above, quality also affects several factors unique to apparel and utility items.

Quality	Protection Factor	Insulation Factor	Smokepop Pack Radius Factor	Shield Max Energy Factor	Shield Recharge Rate Factor	Jump Range Factor
Awful	0.60	0.80	0.84	0.60	0.90	0.75
Poor	0.80	0.90	0.92	0.80	0.95	0.90
Normal	1.00	1.00	1.00	1.00	1.00	1.00
Good	1.15	1.10	1.08	1.20	1.05	1.06
Excellent	1.30	1.20	1.16	1.40	1.10	1.13
Masterwork	1.45	1.50	1.30	1.70	1.20	1.19
Legendary	1.80	1.80	1.50	2.10	1.30	1.25

Structures

In addition to the general effects listed above, quality also affects several factors unique to structures.

Quality	Comfort Factor	Rest Effectiveness Factor	Surgery Success Chance Factor	Recreation Power Factor	Meditation Psyfocus Bonus	Meditation Psyfocus Bonus Offset
Awful	0.76	0.86	0.90	0.76	+12%	+0%
Poor	0.88	0.92	0.95	0.88	+16%	+0%
Normal	1.00	1.00	1.00	1.00	+20%	+1%
Good	1.12	1.08	1.05	1.12	+22%	+1%
Excellent	1.24	1.14	1.10	1.24	+24%	+1%
Masterwork	1.45	1.25	1.15	1.40	+26%	+2%
Legendary	1.70	1.60	1.30	1.80	+28%	+2%

^Meditation Bonus A Only applies to Sculptures. Note that this is NOT a factor, but instead a flat bonus.

At higher quality levels

If a crafted or built item is at least excellent, a piece of random artwork will be engraved on it. This is only meant to add depth and has no further effect. Clothing will not have this artwork.

If a crafted or built item is masterwork, there will be a simple text notification at the top of the screen saying that a colonist has crafted a masterwork item. However, if the item is legendary, there will be a proper notification letter.

As of Beta 19/1.0 masterwork and legendary items never generate on enemies, traders or in bases. They are only available through player creation or as quest rewards, though masterwork items can spawn in ancient shrines.

How quality is determined

When an item requiring a quality is crafted or built, that is, when crafting finishes, the quality is randomly determined using a standard distribution. Expected values by skill level of the crafter are given in the table below.

• The column "Avg. Result" shows the mean quality for each skill level, where awful = 0, poor = 1, normal = 2, etc. The mean quality becomes "normal" at skill level 6, however already at skill level 4 the character will have a 50% chance to craft something that is at least of "normal" quality (median quality).
• The "Avg. Value" column gives the average market value multiplier for that skill level. At skill level 6 you can expect a character to stop wasting material value from crafting.

As quality is rolled once an object is finished, it is possible to have builders work on something until it is almost done, then have the master finish it to get a better quality on the item. This tactic is particularly useful for high work buildings such as royal beds, as it both alleviates the high workload on the good builder and allows their "apprentice" to grind experience. Note however, that as crafted items and art assign "authors" to the unfinished work, this strategy cannot be used for those items.

Skill level	Awful	Poor	Normal	Good	Excellent	Masterwork	Avg. Result	Avg. Value
0 Barely heard of it	64.65%	30.16%	4.98%	0.21%	0.00%	0.00%	0.41	x0.60
1 Utter beginner	43.44%	43.56%	12.11%	0.87%	0.02%	0.00%	0.70	x0.68
2 Beginner	20.28%	53.18%	23.52%	2.93%	0.09%	0.00%	1.09	x0.77
3 Basic familiarity	9.14%	50.76%	33.39%	6.41%	0.29%	0.00%	1.38	x0.84
4 Some familiarity	4.81%	45.18%	39.40%	10.0%	0.61%	0.01%	1.56	x0.89
5 Significant familiarity	2.26%	34.73%	47.14%	14.66%	1.20%	0.01%	1.78	x0.94
6 Capable amateur	0.98%	24.24%	52.15%	20.39%	2.21%	0.03%	1.99	x1.00
7 Weak professional	0.38%	15.51%	53.32%	26.84%	3.87%	0.07%	2.19	x1.05
8 Employable professional	0.13%	9.01%	50.76%	33.52%	6.43%	0.15%	2.38	x1.10
9 Solid professional	0.06%	5.59%	46.97%	38.17%	8.94%	0.26%	2.51	x1.13
10 Skilled professional	0.02%	3.33%	40.15%	43.84%	12.21%	0.45%	2.66	x1.17
11 Very skilled professional	0.01%	1.86%	32.17%	49.06%	16.14%	0.76%	2.82	x1.21
12 Expert	0.00%	1.00%	24.58%	52.66%	20.57%	1.19%	2.96	x1.25
13 Strong expert	0.00%	0.63%	19.99%	53.88%	23.88%	1.62%	3.06	x1.28
14 Master	0.00%	0.40%	15.82%	54.27%	27.35%	2.15%	3.15	x1.30
15 Strong master	0.00%	0.24%	12.29%	53.84%	30.78%	2.85%	3.24	x1.33
16 Region-known master	0.00%	0.14%	9.28%	52.38%	34.53%	3.67%	3.32	x1.36
17 Region-leading master	0.00%	0.08%	6.91%	50.3%	37.93%	4.77%	3.40	x1.39
18 Planet-known master	0.00%	0.04%	5.00%	47.67%	41.23%	6.06%	3.48	x1.42
19 Planet-leading master	0.00%	0.03%	3.54%	42.73%	46.04%	7.67%	3.58	x1.45
20 Legendary master	0.00%	0.01%	2.44%	37.4%	50.56%	9.58%	3.67	x1.49

^A As market value multipliers are capped (see section General), the real value is lower for all items with a market value above 1333 at Normal quality.

Legendary items

Legendary items can not be made naturally, even by a level 20 craftsman - they require external modifiers to quality. In core RimWorld, legendary items can only be made with the mental inspiration Inspired Creativity. Alternatively, Production specialists in the Ideology DLC adds the chance to get to get "legendary" items without an inspiration. See below for details.

Inspired creativity

When a pawn is granted the Inspired Creativity inspiration, the next item, structure or piece of art with a quality level will automatically be two levels higher – thus, if "excellent" or "masterwork" is rolled, a legendary item is produced instead. Even the most capable crafters have only a 60% chance per inspiration to produce a legendary item.

Inspired creativity makes it impossible to craft an item of poor or awful quality; at least normal will be rolled, even at 0 skill level.

Since the inspiration takes effect only when the item is finished, it is useful to raise the skill level of the inspired person as high as possible before actually producing an item; for example you can train crafting on several items that do not have the quality stat (eg. components or bionic body parts) before using up the inspiration.

It is also possible to keep an unfinished item in stock, and wait for an inspiration to occur before actually finishing it; this will still reap the full effect, without requiring you to dedicate a lot of work during the 8-day time window of the inspiration. This strategy is particularly useful for work intensive projects that are always in demand (eg. marine armor or a grand sculpture)

Pawns with the Tortured artist trait can be purposefully given mental breaks by giving them poor treatment such as awful bedrooms or nutrient paste to intentionally trigger Inspired Creativity inspirations. Similarly, if the Royalty DLC is enabled, the use of the Word of Inspiration psycast can be used to generate more creativity inspirations, though other inspirations may be granted instead. Otherwise, keeping pawns in high moods is the only way to increase inspiration frequency.

Quality with Inspired Creativity

Skill level	Normal	Good	Excellent	Masterwork	Legendary	Avg. Result	Avg. Value
0 Barely heard of it	64.65%	30.16%	4.98%	0.21%	0.00%	2.41	x1.10
1 Utter beginner	43.44%	43.56%	12.11%	0.87%	0.02%	2.70	x1.18
2 Beginner	20.28%	53.18%	23.52%	2.93%	0.09%	3.09	x1.30
3 Basic familiarity	9.14%	50.76%	33.39%	6.41%	0.29%	3.38	x1.40
4 Some familiarity	4.81%	45.18%	39.40%	10.0%	0.62%	3.56	x1.48
5 Significant familiarity	2.26%	34.73%	47.14%	14.66%	1.21%	3.78	x1.59
6 Capable amateur	0.98%	24.24%	52.15%	20.39%	2.24%	3.99	x1.72
7 Weak professional	0.38%	15.51%	53.32%	26.84%	3.94%	4.18	x1.87
8 Employable professional	0.13%	9.01%	50.76%	33.52%	6.58%	4.37	x2.04
9 Solid professional	0.06%	5.59%	46.97%	38.17%	9.20%	4.51	x2.19
10 Skilled professional	0.02%	3.33%	40.15%	43.84%	12.66%	4.66	x2.37
11 Very skilled professional	0.01%	1.86%	32.17%	49.06%	16.90%	4.81	x2.58
12 Expert	0.00%	1.00%	24.58%	52.66%	21.76%	4.95	x2.79
13 Strong expert	0.00%	0.63%	19.99%	53.88%	25.50%	5.04	x2.93
14 Master	0.00%	0.40%	15.82%	54.27%	29.50%	5.13	x3.07
15 Strong master	0.00%	0.24%	12.29%	53.84%	33.63%	5.21	x3.21
16 Region-known master	0.00%	0.14%	9.28%	52.38%	38.20%	5.29	x3.36
17 Region-leading master	0.00%	0.08%	6.91%	50.3%	42.70%	5.36	x3.50
18 Planet-known master	0.00%	0.04%	5.00%	47.67%	47.29%	5.42	x3.63
19 Planet-leading master	0.00%	0.03%	3.54%	42.73%	53.71%	5.50	x3.81
20 Legendary master	0.00%	0.01%	2.44%	37.4%	60.14%	5.58	x3.98

^A As market value multipliers are capped (see section General), the real value is lower for all items with a market value above 750 at Normal quality.

Production specialists

With the advent of the Ideology DLC, the addition of the Production specialists adds the chance to get to get "legendary" items without an inspiration. When created by a production specialist, any item, structure or piece of art with a quality level will automatically be one levels higher – thus, if "masterwork" is rolled, a legendary item is produced instead.

Being a production specialist makes it impossible to craft an item of awful quality; at least poor will be rolled, even at 0 skill level.

This bonus stacks with Inspired Creativity inspirations, resulting in works three levels higher i.e. if good is rolled, a legendary item is produced instead.

Quality with Production Specialist

Skill level	Poor	Normal	Good	Excellent	Masterwork	Legendary	Avg. Result	Avg. Value
0 Barely heard of it	64.65%	30.16%	4.98%	0.21%	0.00%	0.00%	1.41	x0.85
1 Utter beginner	43.44%	43.56%	12.11%	0.87%	0.02%	0.00%	1.70	x0.93
2 Beginner	20.28%	53.18%	23.52%	2.93%	0.09%	0.00%	2.09	x1.02
3 Basic familiarity	9.14%	50.76%	33.39%	6.41%	0.29%	0.00%	2.38	x1.10
4 Some familiarity	4.81%	45.18%	39.40%	10.0%	0.61%	0.01%	2.56	x1.15
5 Significant familiarity	2.26%	34.73%	47.14%	14.66%	1.20%	0.01%	2.78	x1.20
6 Capable amateur	0.98%	24.24%	52.15%	20.39%	2.21%	0.03%	2.99	x1.26
7 Weak professional	0.38%	15.51%	53.32%	26.84%	3.87%	0.07%	3.18	x1.33
8 Employable professional	0.13%	9.01%	50.76%	33.52%	6.43%	0.15%	3.38	x1.40
9 Solid professional	0.06%	5.59%	46.97%	38.17%	8.94%	0.26%	3.51	x1.45
10 Skilled professional	0.02%	3.33%	40.15%	43.84%	12.21%	0.45%	3.66	x1.52
11 Very skilled professional	0.01%	1.86%	32.17%	49.06%	16.14%	0.76%	3.82	x1.60
12 Expert	0.00%	1.00%	24.58%	52.66%	20.57%	1.19%	3.96	x1.68
13 Strong expert	0.00%	0.63%	19.99%	53.88%	23.88%	1.62%	4.06	x1.74
14 Master	0.00%	0.40%	15.82%	54.27%	27.35%	2.15%	4.15	x1.81
15 Strong master	0.00%	0.24%	12.29%	53.84%	30.78%	2.85%	4.24	x1.88
16 Region-known master	0.00%	0.14%	9.28%	52.38%	34.53%	3.67%	4.32	x1.95
17 Region-leading master	0.00%	0.08%	6.91%	50.3%	37.93%	4.77%	4.40	x2.03
18 Planet-known master	0.00%	0.04%	5.00%	47.67%	41.23%	6.06%	4.48	x2.11
19 Planet-leading master	0.00%	0.03%	3.54%	42.73%	46.04%	7.67%	4.58	x2.22
20 Legendary master	0.00%	0.01%	2.44%	37.4%	50.56%	9.58%	4.67	x2.33

^A As market value multipliers are capped (see section General), the real value is lower for all items with a market value above 750 at Normal quality.

Quality with Production Specialist + Inspired Creativity

Skill level	Good	Excellent	Masterwork	Legendary	Avg. Result	Avg. Value
0 Barely heard of it	64.65%	30.16%	4.98%	0.20%	3.41	x1.40
1 Utter beginner	43.44%	43.56%	12.11%	0.88%	3.70	x1.54
2 Beginner	20.28%	53.18%	23.52%	3.04%	4.09	x1.79
3 Basic familiarity	9.14%	50.76%	33.39%	6.68%	4.38	x2.05
4 Some familiarity	4.81%	45.18%	39.40%	10.55%	4.56	x2.25
5 Significant familiarity	2.26%	34.73%	47.14%	15.87%	4.77	x2.52
6 Capable amateur	0.98%	24.24%	52.15%	22.63%	4.96	x2.81
7 Weak professional	0.38%	15.51%	53.32%	30.82%	5.14	x3.11
8 Employable professional	0.13%	9.01%	50.76%	40.02%	5.31	x3.41
9 Solid professional	0.06%	5.59%	46.97%	47.36%	5.42	x3.63
10 Skilled professional	0.02%	3.33%	40.15%	56.43%	5.53	x3.88
11 Very skilled professional	0.01%	1.86%	32.17%	65.93%	5.64	x4.13
12 Expert	0.00%	1.00%	24.58%	74.45%	5.73	x4.35
13 Strong expert	0.00%	0.63%	19.99%	79.50%	5.79	x4.48
14 Master	0.00%	0.40%	15.82%	83.82%	5.83	x4.59
15 Strong master	0.00%	0.24%	12.29%	87.51%	5.87	x4.68
16 Region-known master	0.00%	0.14%	9.28%	90.58%	5.90	x4.76
17 Region-leading master	0.00%	0.08%	6.91%	93.02%	5.93	x4.82
18 Planet-known master	0.00%	0.04%	5.00%	94.96%	5.95	x4.87
19 Planet-leading master	0.00%	0.03%	3.54%	96.43%	5.96	x4.91
20 Legendary master	0.00%	0.01%	2.44%	97.54%	5.97	x4.94

^A As market value multipliers are capped (see section General), the real value is lower for all items with a market value above 750 at Normal quality.

Version history

• 0.8.657 - Sculptures and melee weapons have a quality.
• 0.9.722 - High-quality weapons have art engraved into them. All weapons now have quality levels, including guns and bows. Quality affects accuracy.
• Beta 19 - Shoddy (between Awful and Poor) and Superior (between Good and Excellent) qualities removed.