The Grandma is the main antagonist of Cookie Clicker Classic and the 1.0 Update, and the second cheapest building you can purchase with an initial cost of 100 cookies. She produces cookies at a base rate of 1 cookie per second.
Unlike the building before it and after it, Grandmas progress with later buildings very well with the grandma type upgrades, most of which double its efficiency but require 15 or more of a superior building to purchase, and sometimes can be quite expensive, up to 7,500,000,000,000 cookies for Rainbow Grandmas. After all upgrades, each grandma has a CpS of 104857.6 cookies per second herself, not counting the bonuses from One mind, Communal brain sweep, and Elder Pact.
Once you have unlocked 7 grandmas, you unlock the Bingo Center/Research Facility, which (as of 1.036) is currently the only upgrade to make a building four times as efficient, although its price of 1,000,000,000,000,000 cookies means it’ll be a while until it’s worth the cost. This will unlock a new upgrade after 30 minutes (research only starting once the last item researched is purchased), including five multiplier upgrades (Specialized Chocolate Chips for +1% and costing 100,000,000,000 cookies, Designer Cocoa Beans for +2% and costing 200,000,000,000 cookies, Underworld Ovens for +3% and costing 800,000,000,000 cookies, Exotic Nuts for +4% and costing 3,200,000,000,000 cookies, and Arcane Sugar for +5% and costing 12,800,000,000,000 cookies), one upgrade to double Grandma efficiency (Ritual Rolling Pins for 400,000,000,000 cookies), and three upgrades to greatly increase Grandma output but start the Grandmapocalypse (One Mind for 1,600,000,000,000 cookies and Communal Brainsweep for 6,400,000,000,000 cookies, which each give each grandma +0.02 base CpS per grandma, and Elder Pact for 25,600,000,000,000 cookies which gives each grandma +0.05 base CpS per portal. After all the doubling upgrades those figures are a LOT higher than that.)
Each fully upgraded grandma produces cookies according to the following formula:
Sell a grandma. “I thought you loved me.”
Have 1 grandma.
Have 50 grandmas.
Have 100 grandmas.
Friend of the ancients
Have 150 grandmas.
Ruler of the ancients
Have 200 grandmas.
The old never bothered me anyway
Have 250 grandmas.
Have 300 grandmas.
To oldly go
Have 350 grandmas.
Make 10 quintillion cookies just from grandmas.
Panic at the bingo
Make 10 sextillion cookies just from grandmas.
Make 10 septillion cookies just from grandmas.
Reach level 10 grandmas.
Own at least 7 grandma types.
Base price (cookies)
Forwards from grandma
Grandmas are twice as efficient. “RE:RE:thought you’d get a kick out of this ;))”
Steel-plated rolling pins
Grandmas are twice as efficient. “Just what you kneaded.”
Grandmas are twice as efficient. “squish”
Grandmas are twice as efficient. “Gets me going.”
Grandmas are twice as efficient. “Oh… so THAT’s what I’ve been baking.”
Grandmas are twice as efficient. “Counter-intuitively, grandmas have the uncanny ability to become more powerful the older they get.”
Grandmas are twice as efficient. “Complete with flame decals and a little horn that goes “toot”.”
Grandmas are twice as efficient. “It might be a classic tale of bad parenting, but let’s see where grandma is going with this.”
Grandmas are twice as efficient. “Extremely unsettling, and somehow even worse than the regular kind.”
Base price (cookies)
15 farms and 1 grandma
Grandmas are twice as efficient. Farms gain +1% CpS per grandma. “A nice farmer to grow more cookies.”
15 mines and 1 grandma
Grandmas are twice as efficient. Mines gain +1% CpS per 2 grandmas. “A nice miner to dig more cookies.”
15 factories and 1 grandma
Grandmas are twice as efficient. Factories gain +1% CpS per 3 grandmas. “A nice worker to manufacture more cookies.”
15 banks and 1 grandma
Grandmas are twice as efficient. Banks gain +1% CpS per 4 grandmas “A nice banker to cash in more cookies”
15 temples and 1 grandma
Grandmas are twice as efficient. Temples gain +1% CpS per 5 grandmas. “A nice priestess to praise the great Baker in the sky.”
15 wizard towers and 1 grandma
Grandmas are twice as efficient. Wizard towers gain +1% CpS per 6 grandmas. “A nice witch to cast a zip, and a zoop, and poof! Cookies.”
15 shipments and 1 grandma
Grandmas are twice as efficient. Shipments gain +1% CpS per 7 grandmas. “A nice thing to… uh… cookies.”
15 alchemy labs and 1 grandma
Grandmas are twice as efficient. Alchemy labs gain +1% CpS per 8 grandmas. “A nice golden grandma to convert into more cookies.”
15 portals and 1 grandma
Grandmas are twice as efficient. Portals gain +1% CpS per 9 grandmas. “a NiCe GrAnDmA tO bA##########”
15 time machines and 1 grandma
Grandmas are twice as efficient. Time machines gain +1% CpS per 10 grandmas. “A nice grandma’s nice grandma to bake double the cookies.”
15 antimatter condensers and 1 grandma
Grandmas are twice as efficient. Antimatter condensers gain +1% CpS per 11 grandmas. “A mean antigrandma to vomit more cookies.
(Do not put in contact with normal grandmas; loss of matter may occur.)”
15 prisms and 1 grandma
Grandmas are twice as efficient. Prisms gain +1% CpS per 12 grandmas. “A luminous grandma to sparkle into cookies.”
15 chancemakers and 1 grandma
Grandmas are twice as efficient. Chancemakers gain +1% CpS per 13 grandmas. “A fortunate grandma that always seems to find more cookies.”