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The prism is a building added in v1.041. It is currently the most expensive building in the game. It has a base price of 75 billion (75,000,000,000) cookies, and its max CpS (cookies per second) is 352,000,000 when fully upgraded. It currently has 6 upgrades, the most expensive of which costs 600 quintillion cookies. At 15 Prisms, you unlock the rainbow Grandma upgrade, which makes Grandmas twice as efficient.

The cost of buying 100 prisms is just over 587.1 quadrillion cookies. This jumps to 636.2 quintillion for 150 of them. To reach 200 of them, you need a massive 689.5 sextillion cookies. The most Prisms you can have (without cheating) is 4901, after which the price gets too high for the computer to process, and it says "Infinity".  Even if you have infinity cookies (also caused by having too many cookies for the computer to process), you will still not be able to buy it (unless you cheat).


Icon Name Description  ID
Prism1 Lone photon Have 1 prism. 123
Prism2 Dazzling glimmer Have 50 prisms. 124
Prism3 Blinding flash Have 100 prisms. 125
DiamondPrism Unending glow Have 150 prisms. 126
RiseAndShine Rise and shine Have 200 prisms. 158
Prism1 Praise the sun Make 1 sextillion cookies just from prisms. 144


Icon Name Quantity Needed Price (cookies) Description ID #
Prism1 Gem Polish 1 750 billion Prisms gain +1 million base CpS.
"Get rid of the grime and let more light in.
Truly, truly outrageous."
Prism1 9th Color 7.5 trillion Prisms are twice as efficient.
"Delve into the untouched optical depths where even the mantis shrimp hasn't set an eye!"
Prism2 Chocolate Light 10 75 trillion Prisms are twice as efficient.
"Bask into its cocoalesence.
(Warning : may cause various interesting albeit deadly skin conditions.)"
Prism3 Grainbow 50 3.75 quadrillion Prisms are twice as efficient.
"Remember the different grains using the handy Roy G. Biv mnemonic : R is for rice, O is for Oats... uh, B for barley?..."
DiamondPrism Pure Cosmic Light 100 75 quadrillion Prisms are twice as efficient.
"Your prisms now receive pristine unadulterated photons from the other end of the universe."
RustedPrism Glow-in-the-dark 200 600 quintillion Prisms are twice as efficient.
"Your prisms now glow in the dark, effectively doubling their output."

Grandma FormEdit

Purchasing 15 Prisms allows for the purchasing of a Grandma upgrade and a new Grandma type.

Icon Name Quantity Needed Price (cookies) Description ID #
GrandmaAchieve Rainbow grandmas 15 prisms 7,500,000,000,000 Grandmas are twice as efficient.
"A luminous grandma to sparkle into cookies."


  • Part of the flavor text for the Prism upgrade Gem Polish ("Truly, truly outrageous.") is a reference to the 1980s cartoon series Jem, specifically the opening theme. Some believe that it may also be a reference to the League of Legends champion, Taric, but in actual fact, this too is a reference to the theme from "Jem."
  • The graphics of the prism may be a reference to Pink Floyd's "The Dark Side of the Moon" album cover.
  • The News ticker message "Can't you sense the prism watching us?" refers to PRISM, a United States survelliance outed by Edward Snowden.
  • The name of the last achievement, Praise the Sun, is a reference to a famous quote from the game Dark Souls.
  • Inside of the code for the beta version of the game, you can find an achievement "The Dark Side of The Moon" with flavor text "oh god", which requires to have 1000 prisms. It is not added to the final game and Orteil left a commentary after it which says: "this is a joke I promise". Its name is also a reference to the Pink Floyd album of the same name, much like the graphics of the Prism, as stated above.

Cursor Grandma Farm Factory Mine
Shipment Alchemy Lab Portal Time Machine Antimatter Condenser Prism

Start a Discussion Discussions about Prism

  • No prisms?

    2 messages
    • I just noticed there are no prisms in the dungeon beta!
    • Prisms have been released after dungeons beta.

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