Worthless piece of glass - Revision history

Umbire the Phantom: /* Variants */ un, xnh

2026-08-14T20:13:35Z

Variants: un, xnh

← Older revision		Revision as of 20:13, 14 August 2026
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	===SLASH'EM===		===SLASH'EM===
	In [[SLASH'EM]], three worthless pieces of white glass are generated within The Chamber of Greed in the [[Lawful Quest]] during level creation.		In [[SLASH'EM]], three worthless pieces of white glass are generated within The Chamber of Greed in the [[Lawful Quest]] during level creation.

			===UnNetHack===
			In [[UnNetHack]], the [[advent calendar]] level has several worthless pieces of glass scattered around as a form of decoration during level creation.

	===dNetHack===		===dNetHack===
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	[[Mind flayer (dNetHack)\|Mind flayers]] and [[Master mind flayer (dNetHack)\|master mind flayers]] generated in the future (i.e. the [[Anachrononaut quest]] and [[Android quest]]) have a {{frac\|3}} chance of generating with a worthless piece of red glass serving as the focus gem for their lightsaber weapon.		[[Mind flayer (dNetHack)\|Mind flayers]] and [[Master mind flayer (dNetHack)\|master mind flayers]] generated in the future (i.e. the [[Anachrononaut quest]] and [[Android quest]]) have a {{frac\|3}} chance of generating with a worthless piece of red glass serving as the focus gem for their lightsaber weapon.

			===xNetHack===
			In [[xNetHack]], [[Archeologist/xNetHack\|Archeologists]] start the game with all types of worthless glass identified.

			[[Dwarf ruler]]s and [[gnome ruler]]s will not pick up worthless pieces of glass off the ground.

			A blessed [[thiefstone]] is capable of "stealing" gems, including worthless glass.

	===EvilHack===		===EvilHack===

Umbire the Phantom: /* Messages */ Add touchstone message

2026-08-14T18:46:13Z

Messages: Add touchstone message

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	{{message\|The <unicorn> graciously accepts your gift.\|You threw an unidentified piece of worthless glass at a unicorn.}}		{{message\|The <unicorn> graciously accepts your gift.\|You threw an unidentified piece of worthless glass at a unicorn.}}
	{{message\|The <unicorn> is not interested in your junk.\|You threw a formally identified or type-named piece of worthless glass at a unicorn.}}		{{message\|The <unicorn> is not interested in your junk.\|You threw a formally identified or type-named piece of worthless glass at a unicorn.}}

			{{message\|You make scratch marks on the stone(s).\|You rubbed a piece of worthless glass on an uncursed touchstone.}}

	==Variants==		==Variants==

Umbire the Phantom: typo, jewellers

2026-08-14T18:39:27Z

typo, jewellers

← Older revision		Revision as of 18:39, 14 August 2026
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	\|material=glass		\|material=glass
	}}		}}
	A '''worthless piece of glass''', known simply as '''worthless glass''', is a type of [[gem]] that appears in ''[[NetHack]]''. It is naturally made of [[glass]] and comes in nine different variants based on their colors: '''white''', '''blue''', '''red''', '''yellowish brown''', '''orange''', '''yellow''', '''black''', '''green'', and '''violet'''. Worthless glass appears as a "gem" of the matching color when [[unidentified]].		A '''worthless piece of glass''', known simply as '''worthless glass''', is a type of [[gem]] that appears in ''[[NetHack]]''. It is naturally made of [[glass]] and comes in nine different variants based on their colors: '''white''', '''blue''', '''red''', '''yellowish brown''', '''orange''', '''yellow''', '''black''', '''green''', and '''violet'''. Worthless glass appears as a "gem" of the matching color when [[unidentified]].

	==Generation==		==Generation==
	Worthless glass is incredibly common among the random gems that can be discovered in the dungeon.		Worthless glass is incredibly common among the random gems that can be discovered in the dungeon.

	* Of the individual pieces of ~~worthless~~ glass, orange and black glass each make up {{frac\|19\|250}} (7.6%) of all gems that are randomly generated on the ground, in general [[shop]]s or as [[death drop]]s—all other colors of worthless glass each make up {{frac\|77\|1000}} (7.7%) of all gems that are randomly generated this way.		* Of the individual worthless pieces of glass, orange and black glass each make up {{frac\|19\|250}} (7.6%) of all gems that are randomly generated on the ground, in general [[shop]]s or as [[death drop]]s—all other colors of worthless glass each make up {{frac\|77\|1000}} (7.7%) of all gems that are randomly generated this way. Jewelry shops may also stock worthless pieces of glass.
	* Several worthless pieces of glass are [[buried]] or embedded within the stone walls of the dungeon during level creation, and occur as early as the very first dungeon level.		* Several worthless pieces of glass are [[buried]] or embedded within the stone walls of the dungeon during level creation, and occur as early as the very first dungeon level.
	* The "Mimic of the Mines" map for [[Mines' End]] has seven pieces of worthless glass distributed among the six gem piles created on the level: two pieces of violet glass, two pieces of white glass, two pieces of red glass, and a piece of green glass.		* The "Mimic of the Mines" map for [[Mines' End]] has seven pieces of worthless glass distributed among the six gem piles created on the level: two pieces of violet glass, two pieces of white glass, two pieces of red glass, and a piece of green glass.

Umbire the Phantom: bolding

2026-08-14T18:38:40Z

bolding

← Older revision		Revision as of 18:38, 14 August 2026
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	\|material=glass		\|material=glass
	}}		}}
	A '''worthless piece of glass''', known simply as '''worthless glass''', is a type of [[gem]] that appears in ''[[NetHack]]''. It is naturally made of [[glass]] and comes in nine different variants based on their colors: white, blue, red, yellowish brown, orange, yellow, black, green, and violet. Worthless glass appears as a "gem" of the matching color when [[unidentified]].		A '''worthless piece of glass''', known simply as '''worthless glass''', is a type of [[gem]] that appears in ''[[NetHack]]''. It is naturally made of [[glass]] and comes in nine different variants based on their colors: '''white''', '''blue''', '''red''', '''yellowish brown''', '''orange''', '''yellow''', '''black''', '''green'', and '''violet'''. Worthless glass appears as a "gem" of the matching color when [[unidentified]].

	==Generation==		==Generation==

Umbire the Phantom: /* History */ re-organize

2026-08-14T18:37:38Z

History: re-organize

← Older revision		Revision as of 18:37, 14 August 2026
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	==History==		==History==
	Worthless pieces of glass first appear in [[Hack 1.0]], where they occur in blue, red, yellow, and green colors: ~~in these early versions, the color of the glass does not correspond to the color of their [[randomized appearance]].~~ [[NetHack 2.3e]] adds white glass and replaces yellow glass with yellowish-brown glass. [[NetHack 3.0.4]] adds worthless pieces of violet glass, and [[NetHack 3.3.0]] reintroduces yellow glass alongside orange and black colors.		Worthless pieces of glass first appear in [[Hack 1.0]], where they occur in blue, red, yellow, and green colors: [[NetHack 2.3e]] adds white glass and replaces yellow glass with yellowish-brown glass; [[NetHack 3.0.4]] adds worthless pieces of violet glass; and [[NetHack 3.3.0]] reintroduces yellow glass alongside adding orange and black colors. In some of these early versions, the color of the glass does not necessarily correspond to the color of their [[randomized appearance]].

	In versions prior to [[NetHack 3.2.0]], including some variants based on those versions, worthless pieces of glass are fragile like other glass objects. A common strategy for these versions involved players gathering a large collection of gems, naming them all "fake blue" or whichever color they desired, placing them in a [[container]] such as a [[chest]] or [[large box]], and then repeatedly [[Kick (command)\|kicking]] the container to break any worthless glass within until the game stopped printing messages about gems shattering—the surviving gems are confirmed to be valuable. This tactic was nicknamed "kickboxing", and NetHack 3.2.0 fixes this by making worthless pieces of glass non-fragile.{{refsrc\|dokick.c\|339\|version=NetHack 3.2.0}}<ref>[https://groups.google.com/g/rec.games.roguelike.nethack/c/z5zlWw-fpOo/m/ZgNnl1sybzQJ rec.games.roguelike.nethack @ Google Groups - Kickboxing doesn't work in 3.2.0]</ref>		In versions prior to [[NetHack 3.2.0]], including some variants based on those versions, worthless pieces of glass are fragile like other glass objects. A common strategy for these versions involved players gathering a large collection of gems, naming them all "fake blue" or whichever color they desired, placing them in a [[container]] such as a [[chest]] or [[large box]], and then repeatedly [[Kick (command)\|kicking]] the container to break any worthless glass within until the game stopped printing messages about gems shattering—the surviving gems are confirmed to be valuable. This tactic was nicknamed "kickboxing", and NetHack 3.2.0 fixes this by making worthless pieces of glass non-fragile.{{refsrc\|dokick.c\|339\|version=NetHack 3.2.0}}<ref>[https://groups.google.com/g/rec.games.roguelike.nethack/c/z5zlWw-fpOo/m/ZgNnl1sybzQJ rec.games.roguelike.nethack @ Google Groups - Kickboxing doesn't work in 3.2.0]</ref>

Umbire the Phantom: /* History */ Specific versions for each color

2026-08-14T18:36:52Z

History: Specific versions for each color

← Older revision		Revision as of 18:36, 14 August 2026
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	==History==		==History==
	Worthless pieces of glass first appear in [[Hack 1.0]], where they occur in blue, red, yellow, and green colors.		Worthless pieces of glass first appear in [[Hack 1.0]], where they occur in blue, red, yellow, and green colors: in these early versions, the color of the glass does not correspond to the color of their [[randomized appearance]]. [[NetHack 2.3e]] adds white glass and replaces yellow glass with yellowish-brown glass. [[NetHack 3.0.4]] adds worthless pieces of violet glass, and [[NetHack 3.3.0]] reintroduces yellow glass alongside orange and black colors.

	In versions prior to [[NetHack 3.2.0]], including some variants based on those versions, worthless pieces of glass are fragile like other glass objects. A common strategy for these versions involved players gathering a large collection of gems, naming them all "fake blue" or whichever color they desired, placing them in a [[container]] such as a [[chest]] or [[large box]], and then repeatedly [[Kick (command)\|kicking]] the container to break any worthless glass within until the game stopped printing messages about gems shattering—the surviving gems are confirmed to be valuable. This tactic was nicknamed "kickboxing", and NetHack 3.2.0 fixes this by making worthless pieces of glass non-fragile.{{refsrc\|dokick.c\|339\|version=NetHack 3.2.0}}<ref>[https://groups.google.com/g/rec.games.roguelike.nethack/c/z5zlWw-fpOo/m/ZgNnl1sybzQJ rec.games.roguelike.nethack @ Google Groups - Kickboxing doesn't work in 3.2.0]</ref>		In versions prior to [[NetHack 3.2.0]], including some variants based on those versions, worthless pieces of glass are fragile like other glass objects. A common strategy for these versions involved players gathering a large collection of gems, naming them all "fake blue" or whichever color they desired, placing them in a [[container]] such as a [[chest]] or [[large box]], and then repeatedly [[Kick (command)\|kicking]] the container to break any worthless glass within until the game stopped printing messages about gems shattering—the surviving gems are confirmed to be valuable. This tactic was nicknamed "kickboxing", and NetHack 3.2.0 fixes this by making worthless pieces of glass non-fragile.{{refsrc\|dokick.c\|339\|version=NetHack 3.2.0}}<ref>[https://groups.google.com/g/rec.games.roguelike.nethack/c/z5zlWw-fpOo/m/ZgNnl1sybzQJ rec.games.roguelike.nethack @ Google Groups - Kickboxing doesn't work in 3.2.0]</ref>

Umbire the Phantom: /* History */ tense

2026-08-14T18:30:07Z

History: tense

← Older revision		Revision as of 18:30, 14 August 2026
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	Worthless pieces of glass first appear in [[Hack 1.0]], where they occur in blue, red, yellow, and green colors.		Worthless pieces of glass first appear in [[Hack 1.0]], where they occur in blue, red, yellow, and green colors.

	In versions prior to [[NetHack 3.2.0]], including some variants based on those versions, worthless pieces of glass are fragile like other glass objects. A common strategy for these versions involved players gathering a large collection of gems, naming them all "fake blue" or whichever color they desired, placing them in a [[container]] such as a [[chest]] or [[large box]], and then repeatedly [[Kick (command)\|kicking]] the container to break any worthless glass within until the game stopped printing messages about gems shattering—the surviving gems are confirmed to be valuable. This tactic was nicknamed "kickboxing", and NetHack 3.2.0 ~~fixed~~ this by making worthless pieces of glass non-fragile.{{refsrc\|dokick.c\|339\|version=NetHack 3.2.0}}<ref>[https://groups.google.com/g/rec.games.roguelike.nethack/c/z5zlWw-fpOo/m/ZgNnl1sybzQJ rec.games.roguelike.nethack @ Google Groups - Kickboxing doesn't work in 3.2.0]</ref>		In versions prior to [[NetHack 3.2.0]], including some variants based on those versions, worthless pieces of glass are fragile like other glass objects. A common strategy for these versions involved players gathering a large collection of gems, naming them all "fake blue" or whichever color they desired, placing them in a [[container]] such as a [[chest]] or [[large box]], and then repeatedly [[Kick (command)\|kicking]] the container to break any worthless glass within until the game stopped printing messages about gems shattering—the surviving gems are confirmed to be valuable. This tactic was nicknamed "kickboxing", and NetHack 3.2.0 fixes this by making worthless pieces of glass non-fragile.{{refsrc\|dokick.c\|339\|version=NetHack 3.2.0}}<ref>[https://groups.google.com/g/rec.games.roguelike.nethack/c/z5zlWw-fpOo/m/ZgNnl1sybzQJ rec.games.roguelike.nethack @ Google Groups - Kickboxing doesn't work in 3.2.0]</ref>

	==Origin==		==Origin==

Umbire the Phantom: /* dNetHack */ oops

2026-08-14T18:29:51Z

dNetHack: oops

← Older revision		Revision as of 18:29, 14 August 2026
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	In [[dNetHack]], [[notdNetHack]] and [[notnotdNetHack]], using worthless glass as a focus gem for a [[Lightsaber (dNetHack)\|lightsaber]] will always produce a red blade regardless of the color of glass 'gem' used.		In [[dNetHack]], [[notdNetHack]] and [[notnotdNetHack]], using worthless glass as a focus gem for a [[Lightsaber (dNetHack)\|lightsaber]] will always produce a red blade regardless of the color of glass 'gem' used.

	[[Mind flayer (dNetHack)\|Mind flayers]] and [[Master mind flayer (dNetHack)\|master mind flayers]] generated in the future have a {{frac\|3}} chance of generating with a worthless piece of red glass serving as the focus gem for their lightsaber weapon.		[[Mind flayer (dNetHack)\|Mind flayers]] and [[Master mind flayer (dNetHack)\|master mind flayers]] generated in the future (i.e. the [[Anachrononaut quest]] and [[Android quest]]) have a {{frac\|3}} chance of generating with a worthless piece of red glass serving as the focus gem for their lightsaber weapon.

	===EvilHack===		===EvilHack===

Umbire the Phantom: /* Variants / dnh flayers

2026-08-14T18:29:30Z

Variants: *dnh flayers

← Older revision		Revision as of 18:29, 14 August 2026
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	===dNetHack===		===dNetHack===
	In [[dNetHack]], [[notdNetHack]] and [[notnotdNetHack]], using worthless glass as a focus gem for a [[Lightsaber (dNetHack)\|lightsaber]] will always produce a red blade regardless of the color of glass 'gem' used.		In [[dNetHack]], [[notdNetHack]] and [[notnotdNetHack]], using worthless glass as a focus gem for a [[Lightsaber (dNetHack)\|lightsaber]] will always produce a red blade regardless of the color of glass 'gem' used.

			[[Mind flayer (dNetHack)\|Mind flayers]] and [[Master mind flayer (dNetHack)\|master mind flayers]] generated in the future have a {{frac\|3}} chance of generating with a worthless piece of red glass serving as the focus gem for their lightsaber weapon.

	===EvilHack===		===EvilHack===

Umbire the Phantom: *dnh, mimic of the mines, touchstones

2026-08-14T18:17:34Z

*dnh, mimic of the mines, touchstones

← Older revision		Revision as of 18:17, 14 August 2026
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	==Generation==		==Generation==
	Worthless glass is incredibly common among the random gems that can be discovered in the dungeon:		Worthless glass is incredibly common among the random gems that can be discovered in the dungeon.

	* Of the individual pieces of worthless glass, orange and black glass each make up {{frac\|19\|250}} (7.6%) of all gems that are randomly generated on the ground, in general [[shop]]s or as [[death drop]]s—all other colors of worthless glass each make up {{frac\|77\|1000}} (7.7%) of all gems that are randomly generated this way.		* Of the individual pieces of worthless glass, orange and black glass each make up {{frac\|19\|250}} (7.6%) of all gems that are randomly generated on the ground, in general [[shop]]s or as [[death drop]]s—all other colors of worthless glass each make up {{frac\|77\|1000}} (7.7%) of all gems that are randomly generated this way.
	* Several worthless pieces of glass are [[buried]] or embedded within the stone walls of the dungeon during level creation, and occur as early as the very first level.		* Several worthless pieces of glass are [[buried]] or embedded within the stone walls of the dungeon during level creation, and occur as early as the very first dungeon level.
			* The "Mimic of the Mines" map for [[Mines' End]] has seven pieces of worthless glass distributed among the six gem piles created on the level: two pieces of violet glass, two pieces of white glass, two pieces of red glass, and a piece of green glass.

	Worthless pieces of glass are always generated as [[uncursed]], with the exception of [[bones]] files and fake "bones" generated on some early [[trap]]s.		Worthless pieces of glass are always generated as [[uncursed]], with the exception of [[bones]] files and fake "bones" generated on some early [[trap]]s.
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	All types of worthless glass are considered to be soft gems. Though they have no base cost, worthless pieces of glass that are found in shop will be priced as though they were actual valuable gemstones unless they are identified. Worthless glass does not break under normal circumstances like most other glass items.{{refsrc\|src/dothrow.c\|2594-L2596\|nethack=5.0.0\|comment=glass items ''other'' than armor, artifacts and gems will always return <tt>TRUE</tt>, while glass gems always return <tt>FALSE</tt>}}		All types of worthless glass are considered to be soft gems. Though they have no base cost, worthless pieces of glass that are found in shop will be priced as though they were actual valuable gemstones unless they are identified. Worthless glass does not break under normal circumstances like most other glass items.{{refsrc\|src/dothrow.c\|2594-L2596\|nethack=5.0.0\|comment=glass items ''other'' than armor, artifacts and gems will always return <tt>TRUE</tt>, while glass gems always return <tt>FALSE</tt>}}

	[[Applying]] a [[touchstone]] to worthless glass or [[rubbing]] them together will identify the glass if the touchstone is blessed, ~~and~~ will ~~otherwise~~ always produce scratch marks on the touchstone~~—applying or rubbing~~ a cursed touchstone ~~to worthless glass has~~ a chance of destroying the glass.		[[Applying]] a [[touchstone]] to worthless glass or [[rubbing]] them together will identify the glass if either the touchstone is blessed or the [[hero]] is an [[Archeologist]] or [[Gnome (starting race)\|gnome]] using an uncursed touchstone.{{refsrc\|src/apply.c\|2744-L2751\|nethack=5.0.0}} Otherwise, it will always produce scratch marks on the touchstone, with a cursed touchstone having a {{frac\|5}} chance (20%) of destroying the glass.{{refsrc\|src/apply.c\|2707-L2719\|nethack=5.0.0}}{{refsrc\|src/apply.c\|2752-L2757\|nethack=5.0.0}}

	Worthless pieces of glass can be [[thrown]] or [[fired]] as weapons, and worthless glass that is used as [[ammunition]] this way and hits a [[monster]] may mulch and disappear like other projectiles—shooting worthless glass with a [[sling]] trains the [[skill]] and enables them to be [[multishot]]. Worthless glass can be automatically [[quivered]] by using the [[firing]] command while [[wielding]] a sling if the <tt>[[autoquiver]]</tt> option is enabled.{{refsrc\|src/dothrow.c\|392-L404\|nethack=5.0.0}}{{refsrc\|src/dothrow.c\|431-L441\|nethack=5.0.0}}		Worthless pieces of glass can be [[thrown]] or [[fired]] as weapons, and worthless glass that is used as [[ammunition]] this way and hits a [[monster]] may mulch and disappear like other projectiles—shooting worthless glass with a [[sling]] trains the [[skill]] and enables them to be [[multishot]]. Worthless glass can be automatically [[quivered]] by using the [[firing]] command while [[wielding]] a sling if the <tt>[[autoquiver]]</tt> option is enabled.{{refsrc\|src/dothrow.c\|392-L404\|nethack=5.0.0}}{{refsrc\|src/dothrow.c\|431-L441\|nethack=5.0.0}}
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	===SLASH'EM===		===SLASH'EM===
	In [[SLASH'EM]], three worthless pieces of white glass are generated within The Chamber of Greed in the [[Lawful Quest]] during level creation.		In [[SLASH'EM]], three worthless pieces of white glass are generated within The Chamber of Greed in the [[Lawful Quest]] during level creation.

			===dNetHack===
			In [[dNetHack]], [[notdNetHack]] and [[notnotdNetHack]], using worthless glass as a focus gem for a [[Lightsaber (dNetHack)\|lightsaber]] will always produce a red blade regardless of the color of glass 'gem' used.

	===EvilHack===		===EvilHack===