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GLaDOS' Orbs1 hint left
The final boss fight is pretty tense (as you might expect thanks to all the neurotoxin), but did you know that the orbs you destroy all have unique voice lines and personalities?

The orb with a yellow eye is extremely curious, mostly asking inane questions ('what's that?', 'where are we going?', and 'ew, what's wrong with your legs?')

The purple-eyed orb is obsessed with cake, but seemingly corrupted - its recipe includes everything from 'sediment-shaped sediment' to 'one large rhubarb'. Just for fun, a full ingredient list from the Portal wiki is included in the next hint.

The red-eyed orb is seemingly made of pure rage, and its dialogue only consists of snarls and growls.

The first orb you destroy (the one that has a purple eye) is the exception - it has no dialogue.

Full ingredient list

Just in case it needed to be said - don't make this, and definitely don't eat it - unless you really like rhubarb!
  • One 18.25 ounce package chocolate cake mix.
  • One can prepared coconut pecan frosting
  • 3/4 cup vegetable oil
  • Four large eggs
  • One cup semi-sweet chocolate chips
  • 3/4 cups butter or margarine
  • 1 2/3 cups granulated sugar
  • Two cups all purpose flour

Don't forget garnishes such as:
  • Fish shaped crackers
  • Fish shaped candies
  • Fish shaped solid waste
  • Fish shaped dirt
  • Fish shaped ethyl benzene
  • Pull and peel licorice.
  • Fish shaped volatile organic compounds
  • Sediment-shaped sediment
  • Candy coated peanut butter pieces, shaped like fish
  • One cup lemon juice
  • Alpha resins
  • Unsaturated polyester resin
  • Fiberglass surface resins
  • Volatile malted milk impoundments
  • Nine large egg yolks
  • Twelve medium geosynthetic membranes
  • One cup granulated sugar
  • An entry called 'how to kill someone with your bare hands'
  • Two cups rhubarb, sliced
  • 2/3 cups granulated rhubarb
  • One tablespoon all-purpose rhubarb
  • One teaspoon grated orange rhubarb
  • Three tablespoons rhubarb, on fire
  • One large rhubarb
  • One cross borehole electro-magnetic imaging rhubarb
  • Two tablespoons rhubarb juice
  • Adjustable aluminum head positioner
  • Slaughter electric needle injector
  • Cordless electric needle injector
  • Injector needle driver
  • Injector needle gun
  • Cranial caps

The recipe ends with a promise that 'it contains proven preservatives, deep penetration agents, and gas and odor control chemicals that will deodorize and preserve putrid tissue.'

Guide help

This is the low-spoiler guide for "GLaDOS' Orbs" puzzle in Portal. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.

Up to "Trivia"
Hints written by Kieron West
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