* ThrowItIn:
** The badges 'Mustard Cleanup' and 'How do I Shot Mustard?' are awarded in cases where the game cleans up the result of infinity minus infinity.
** After a certain point, very large numbers are 'rounded up' to infinity, including prices of items and the amount of sand and castles gathered. Rather than working around the problem or preventing it from happening, this was turned into a critical game mechanic.

* PeopleSitOnChairs: One of the game's boosts (as in it's literally named that), which [[spoiler: multiplies the rates by 1 then adds 0.]]

** Maximum finite value for anything is 1.7976931348623157e+308 - anything higher causes the value to become Infinite.

** The TimeTravel boost's messages and related badges are full of references to various time travel-related works, especially ''Film/BackToTheFuture''.

'''[[http://castle.chirpingmustard.com Sandcastle Builder]]''' is an IdleGame by one Eternal Density as a fan-made companion to [[Webcomic/XkcdTime xkcd: Time]]. It was first available on [[http://forums.xkcd.com/viewtopic.php?f=7&t=101043&start=57400#p3452117 September 4, 2013]]. The goal of the game seems simple, but isn't. You start out with a clickable image of a beach from xkcd: Time. One click digs one sand, and one sand produces one castle. This seems straightforward, but the amount of sand needed per castle increases following the Fibonacci Sequence. Once you've accumulated enough castles, you'll be able to purchase tools which produce sand automatically, other tools to produce castles at certain intervals, and boosts which let you produce sand sand and castles even faster. Soon you won't need to click to dig sand manually, but there quickly becomes other reasons to click. Then things get more and more complicated with 'redundakitties', 'ninja', 'the DepartmentOfRedundancyDepartment', '[[JudgementDay Judgement Dip]]', and TimeTravel. Also the whole thing is packed full of obscure references and made up words from the ''{{Webcomic/xkcd}}'' forum.

* JudgementDay: Judgement Dip, an event where your newpixbots revolt and start destroying you painstakingly hoarded castles. [[spoiler: Which seems like a terrible thing to be avoided, then turns out to be necessary for progression, then gets bad, then becomes necessary again.]]

* PeopleSitOnChairs: one of the game's boosts (as in it's literally named that), which... [[spoiler: multiplies the rates by 1 then adds 0.]]

* PowerupLetdown: one of the game's boosts, which... [[spoiler: multiplies the rates by 1 then adds 0.]]

* PeopleSitOnChairs: one of the game's boosts, which... [[spoiler: multiplies the rates by 1 then adds 0.]]

** Production Control can't be upgraded past 6e+51 at which point the player is awarded the "Nope!" badge
* DepartmentOfRedundancyDepartment: Literally (it's an upgrade you can get).

** In a way, the [[spoiler: Glass Ceilings]] are that as well.
** Making a decent user-interface layout has become an Egregious example of this also.

** The word "day" is always replaced with "dip"
** Molpies are just cute animals
** Vital game functions such as "partial reset" and "complete reset" are confusingly named "Molpy Down" and "Coma"
** "big" is replaced by "seaish"
** The numerical value [=NaN=] (Not a Number, which results from undefined operations such as subtracting infinity from infinity or multiplying infinity by 0) is displayed as "Mustard"

* DepartmentOfRedundancyDepartment: Literally (it's an upgrade you can get)
* EasterEgg: several
* JudgementDay: Judgement Dip [[spoiler: zigzags this, since it seems like a terrible thing to be avoided, then turns out to be necessary for progression, then gets bad, then becomes necessary again]]

* MontyHaul: Exaggerated: Once you have infinite Sandcastles, you're only getting started
* PantheraAwesome: Inspired by 'Lucky', the big cat in [[Webcomic/XkcdTime xkcd: Time]], are the 'Not Lucky' reward, and boosts such as 'Panther Salve','Panther Poke', and 'Panther Glaze'.

** The TimeTravel boost's messages and related badges are full of refrences to various timetravel-related works, especially Film/BackToTheFuture
** Judgement Dip

** The badges 'Mustard Cleanup' and 'How do I Shot Mustard?' are awarded in cases where the game cleans up the result of infinity minus infinity
** After a certain point, very large numbers are 'rounded up' to infinity, including prices of items and the amount of sand and castles gathered. Rather than working around the problem or preventing it from happening, this was turned into a critical game mechanic.

*** Wouldn't that count as a subversion?

* {{Cap}}: Maximum finite value for anything is 1.7976931348623157e+308 - anything higher causes the value to become Infinite.
** Wouldn't that count as a subversion?

** After a certain point, very large numbers are 'rounded up' to infinity, including prices of items and the amount of sand and castles gathered. Rather than working around the problem or preventing it from happening, this was turned into a critical game mechanic.