The Prism is a building added in the lovely rainbowcalypseupdate. It is the fourteenth building in the game, costs 2.1 quadrillion cookies and produces 2.9 billion CpS by converting light into cookies.
Prisms are twice as efficient. "Get rid of the grime and let more light in. Truly, truly outrageous."
175
9th color
Own 5 prisms
105 quadrillion
Prisms are twice as efficient. "Delve into the untouched optical depths where even the mantis shrimp hasn't set an eye!"
176
Chocolate light
Own 25 prisms
1.05 quintillion
Prisms are twice as efficient. "Bask into its cocoalesence. (Warning : may cause various interesting albeit deadly skin conditions.)"
177
Grainbow
Own 50 prisms
105 quintillion
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?..."
178
Pure cosmic light
Own 100 Prisms
10.5 sextillion
Prisms are twice as efficient. "Your prisms now receive pristine unadulterated photons from the other end of the universe."
179
Glow-in-the-dark
Own 150 Prisms
1.05 septillion
Prisms are twice as efficient. "Your prisms now glow in the dark, effectively doubling their output."
201
Lux sanctorum
Own 200 Prisms
1.05 octillion
Prisms are twice as efficient. "Your prism attendants have become increasingly mesmerized with something in the light - or maybe something beyond it; beyond us all, perhaps?"
306
Reverse shadows
Own 250 Prisms
1.05 nonillion
Prisms are twice as efficient. "Oh man, this is really messing with your eyes."
319
Crystal mirrors
Own 300 Prisms
1.05 decillion
Prisms are twice as efficient. "Designed to filter more light back into your prisms, reaching levels of brightness that reality itself had never planned for.
440
Reverse theory of light
Own 350 Prisms
1.05 undecillion
Prisms are twice as efficient. "A whole new world of physics opens up when you decide that antiphotons are real and posit that light is merely a void in shadow."
492
Light capture measures
Own 400 Prisms
10.5 duodecillion
Prisms are twice as efficient. "As the universe gets ever so slightly dimmer due to you converting more and more of its light into cookies, you've taken to finding new and unexplored sources of light for your prisms; for instance, the warm glow emitted by a pregnant woman, or the twinkle in the eye of a hopeful child."
518
Light speed limit
Own 450 prisms
105 tredecillion
Prisms are twice as efficient. "Whoah, slow down. Harvesting light is well and good but it'd be much easier if it weren't so dang fast! This should thankfully take care of that."
674
Occam's laser
Own 500 prisms
1.05 quindecillion
Prisms are twice as efficient. "Invented by Franciscan friar William of Occam in 1327. An impossibly clever use of light theory with a billion possible applications, some of which frightfully destructive. Confined to a single goat-skin parchment for hundreds of years until the patent expired and hit public domain, just now."
712
Hyperblack paint
Own 550 prisms
10.5 sexdecillion
Prisms are twice as efficient. "As the technology behind your prisms evolves, their storage becomes more and more problematic: within seconds, a single prism's reflective ability can set a whole underground hangar ablaze as it catches the slightest glint of light. However, once coated with this new shade of paint, its damage may be reduced to only giving third-degree burns to employees that stand too close."
755
Lab goggles but like cool shades
Own 600 prisms
105 septendecillion
Prisms are twice as efficient. "Mandatory equipment in your prismatic labs, and dashingly stylish at that. A smidge safer than just squinting at the twinkly things."
852
Other Upgrades[]
Icon
Name
Unlock condition
Base price
Description
ID
Rainbow grandmas
15 prisms and 1 grandma owned
105 quadrillion
Grandmas are twice as efficient. Prisms gain +1% CpS per 12 grandmas. "A luminous grandma to sparkle into cookies."
180
Abysmal glimmer
75 prisms, 75 portals and "Synergies Vol. II" purchased
422 septillion
Portals gain +5% CpS per prism. Prisms gain +0.1% CpS per portal. "Someone, or something, is staring back at you. Perhaps at all of us."
386
Primeval glow
75 prisms, 75 time machines and "Synergies Vol. II" purchased
448 septillion
Time machines gain +5% CpS per prism. Prisms gain +0.1% CpS per time machine. "From unending times, an ancient light still shines, impossibly pure and fragile in its old age."
388
Light magic
15 wizard towers, 15 prisms and "Synergies Vol. I" purchased
420 quintillion
Wizard towers gain +5% CpS per prism. Prisms gain +0.1% CpS per wizard tower. "Actually not to be taken lightly! No, I'm serious. 178 people died last year. You don't mess around with magic."
391
Mystical energies
75 temples, 75 prisms and "Synergies Vol. II" purchased
420 septillion
Temples gain +5% CpS per prism. Prisms gain +0.1% CpS per temple. "Something beckons from within the light. It is warm, comforting, and apparently the cause for several kinds of exotic skin cancers."
392
Recursive mirrors
15 prisms, 15 fractal engines and "Synergies Vol. I" purchased
66.2 sextillion
Prisms gain +5% CpS per fractal engine. Fractal engines gain +0.1% CpS per prism. "Do you have any idea what happens when you point two of these at each other? Apparently, the universe doesn't either."
533
Fortune #014
Random fortune from news ticker
163.333 tredecillion
Prisms are 7% more efficient and 7% cheaper. "Staring at a dazzling light can blind you back to darkness."
634
Unshackled prisms (heavenly upgrade)
"Unshackled antimatter condensers"" purchased
1.581 quadrillion
Tiered upgrades for Prisms provide an extra +70% production. Only works with unshackled upgrade tiers. "Brilliance has no upper limit."
781
Gallery[]
Background
Rainbow Grandma
Trivia[]
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".
The news ticker message "Can't you sense the prism watching us?" refers to PRISM, a United States surveillance outed by Edward Snowden.
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 fact, this is also a reference to the theme from "Jem."
The achievement "My eyes" may be a reference to the MY EYES!!! meme format, given the green colouration of the achievement, the green background of the meme, and the meme itself (which features a character's eyes being burned by bright light).
The achievement "Praise the Sun" is a reference to a famous quote from the game Dark Souls.
The upgrade "Lux sanctorum" may reference the book of same name and is "holy light" in Latin.
The unused achievement "The Dark Side of The Moon" is a reference to the Pink Floyd album of the same name.