Have 600 shipments. "Yes, there is. You're currently using it as filling in experimental flavor prototype #810657."
Have 650 shipments.
Make 100 quintillion cookies just from shipments.
The most precious cargo
Make 1 octillion cookies just from shipments.
Neither snow nor rain nor heat nor gloom of night
Make 10 decillion cookies just from shipments.
Been there done that
Reach level 10 shipments.
Own 1 shipment
Shipments are twice as efficient. "If you removed your space helmet, you could probably smell it! (Note : don't do that.)"
Own 5 shipments
Shipments are twice as efficient. "By using these as shortcuts, your ships can travel much faster."
Own 25 shipments
Shipments are twice as efficient. "Come back soon!"
Own 50 shipments
Shipments are twice as efficient. "To boldly bake."
Own 100 shipments
Shipments are twice as efficient. "My god. It's full of chocolate bars."
Own 150 shipments
Shipments are twice as efficient. "Built to last, this humongous spacecraft will surely deliver your cookies to the deep ends of space, one day."
Own 200 shipments
Shipments are twice as efficient. "You've found a way to apply your knowledge of cosmic technology to slightly more local endeavors; this gigantic sphere of meta-materials, wrapping the solar system, is sure to kick your baking abilities up a notch."
The final frontier
Own 250 shipments
Shipments are twice as efficient. "It's been a long road, getting from there to here. It's all worth it though - the sights are lovely and the oil prices slightly more reasonable."
Own 300 shipments
Shipments are twice as efficient. "Your ships are now fitted with completely robotic crews! It's crazy how much money you save when you don't have to compensate the families of those lost in space."
Restaurants at the end of the universe
Own 350 shipments
Shipments are twice as efficient. "Since the universe is spatially infinite, and therefore can be construed to have infinite ends, you've opened an infinite chain of restaurants where your space truckers can rest and partake in some home-brand cookie-based meals."
Own 400 shipments
Shipments are twice as efficient. "You've managed to chart a language that can be understood by any sentient species in the galaxy; its exciting vocabulary contains over 56 trillion words that sound and look like sparkly burps, forming intricate sentences that usually translate to something like "give us your cookies, or else"."
Own 450 shipments
Shipments are twice as efficient. "If you think of the universe as an nth-dimensional torus that wraps back on itself in every direction, you can save a fortune on rocket fuel! Of course the universe isn't actually shaped like that, but you've never let details stand in your way."
Own 500 shipments
Shipments are twice as efficient. "An intergalactic delegation made you pinky-swear not to directly interact with lesser alien cultures. Which is fine, because it's much funnier to rob a planet blind when its inhabitants have no idea what's going on."
Cosmic foreground radiation
Own 550 shipments
Shipments are twice as efficient. "Ah, this is a problem."
15 shipments and 1 grandma owned
Grandmas are twice as efficient. Shipments gain +1% CpS per 7 grandmas. "A nice thing to... uh... cookies."
75 Mines, 75 Shipments and "Synergies Vol. II" purchased
Mines gain +5% CpS per shipment. Shipments gain +0.1% CpS per mine. "As per the 1974 United Cosmic Convention, comets, moons, and inhabited planetoids are no longer legally excavatable. But hey, a space bribe goes a long way."
15 Mines, 15 Shipments and "Synergies Vol. I" purchased
Mines gain +5% CpS per shipment. Shipments gain +0.1% CpS per mine. "Somehow better than plutonium for powering rockets. Extracted from the fuels of ancient, fossilized civilizations."
75 Factories, 75 Shipments and "Synergies Vol. II" purchased
Factories gain +5% CpS per shipment. Shipments gain +0.1% CpS per factory. "Where carpentry, blind luck, and asbestos insulation unite to produce the most dazzling spaceships on the planet."
15 Shipments, 15 Time machines and "Synergies Vol. I" purchased
Shipments gain +5% CpS per time machine. Time machines gain +0.1% CpS per shipment. "People will tell you this isn't physically possible. These are people you don't want on your ship."
Random fortune from news ticker
Shipments are 7% more efficient and 7% cheaper. "Every mile travelled expands the mind by just as much."
Unshackled shipments (heavenly upgrade)
"Unshackled wizard towers" purchased
Tiered upgrades for Shipments provide an extra +120% production. Only works with unshackled upgrade tiers. "Everywhere at once."
In Cookie Clicker Classic
Two images from the Classic version, left: icon shown in the store, right: appearance in the middle field
The shipment is the fourth most expensive upgrade available. It gives 100 cookies every 5 seconds, therefore adding 20 cookies/second.
It initially costs 7,000 cookies and will increase 10% with each consecutive purchase.
Buying your first Shipment will increase Grandma output by +3 Cookies per 5 seconds. It will also cause some grandmas to become alien grandmas with purple skin, three legs, and grey rolling pins.
The fact that shipments "Brings in fresh cookies from the cookie planet" seems to suggest that Cookie Clicker takes place in a universe where planets are made of cookie dough. This is reinforced by mines suggesting the Cookie Clicker planet itself is made of cookies.
The upgrade "Generation Ship" is a reference to generation ship or generation starship, which is a hypothetical type of interstellar ark starship that travels across great distances between stars at a speed slower than the speed of light as the travel will take generations of human lifespan.
The flavor text from the achievement "Warp Drive" ("To boldly bake") is a reference to the Star Trek series, in which the main mission is "to boldly go where no man has gone before."
The flavor text for the upgrade "Chocolate monoliths" ("My god. It's full of chocolate bars") is a reference to 2001: A Space Odyssey, in which the protagonist says "My God. It's full of stars!"
The achievement "Type II Civilization" refers to the Kardashev Scale, a measurement of how advanced an alien race is.
The fact that most upgrades consist of 51 is a reference to Planet 51, by SEGA.
The flavor text for the upgrade "The final frontier" ("It's been a long road, getting from there to here") seems to reference the Star Trek: Enterprise theme song "Faith of the Heart". The name may also be a reference to the movie "Star Trek V: The Final Frontier".
The upgrade "Restaurants at the end of the universe" is a reference to the book The Hitchhiker's Guide to the Galaxy.
The Achievement "far far away" is a reference to Star Wars and the opener, "In a galaxy far, far away"
The Achievement "Space space space space space" could be a reference to the Space Core from Portal 2.
The Achievement "Only shooting stars" is a reference to the song "All Star" by Smash Mouth.