If you’re not familiar with the genre, you might feel like there isn’t much depth to idle games. While it’s true that you’ll spend a lot of time idling, Cookie Clicker is still packed with hundreds of achievements. Sure, they can be a bit repetitive at times, but that doesn’t take away from their difficulty, especially if you’re chasing achievements.

From a certain amount of buildings that produce cookies to the total number of cookies baked or upgrades purchased in one climb, some higher level achievements can take a while to clear. Based on Steam’s global gameplay statistics, here are the ten hardest achievements to get in the game.

## 10 Pebcakes

Who knew you could synthesize cookies through the JavaScript console? With only a 1.6% completion rate, the Pebcakes achievement requires you to have a total of 700 JavaScript console builds. If you’re wondering what the total cost of this would be, you’d need to pick up 218,649 ninedecillion cookies.

If your cookies per second (CpS) were 770 trillion, it would only take about an hour to afford all 700 JavaScript consoles, assuming you didn’t buy any upgrades or other builds during that time.

## 9 Speed is the name of the game

Players who have achieved this achievement begin their foray into the nonsensical realm of Cookie Clicker. With only a 1.4% completion rate, Speed’s The Name Of The Game achievement requires you to have a total CPS of 100 septendecillion. That’s a staggering amount of cookies produced.

If you are not a mathematician and have never heard of the word septendecillion, it is equal to a number, in this case 100, followed by 102 zeros. Who would need that many cookies anyway?

## 8 More green on other sides

When there just aren’t enough ovens and the supply doesn’t meet the demand, it’s pretty reasonable to start hunting for cookies from different dimensions, right? With only a 1.3% completion rate, the Greener On The Other Sides achievement requires you to have a total of 700 inactive buildings.

To get that much idleverse, you’ll have to shell out a price of about 36.955 vigintillion. Who knows, maybe working towards this achievement will help you get on your ‘watch later’ list on YouTube?

## 7 Everyone everywhere all at once

This is where things start to get a little weird. When cookie-making buildings and production-enhancing upgrades just aren’t enough, it’s time to start cloning yourself, because no one knows how to build a cookie empire like you.

With only a 1.1% completion rate, the Everyone Everywhere All At Once achievement requires you to have a total of 650 You buildings. The final cost of that many of your clones equals about 1,535 unvigintillion cookies. You may want to start attaching name tags to your clones to avoid confusion.

## 6 Where are my thoughts

After a long day of mindless cookie-making, the last thing you want to do is use more brain power. Thankfully, those crusty pans you invested in have you covered, as they can whip up cookies in no time.

With only a 1.1% completion rate, the Where Is My Mind achievement requires you to have a total of 700 cortex copper buildings. You will need to save 5,851 unvigintillion cookies to complete this achievement. Depending on your CpS, this can take anywhere from a few hours to days or even weeks.

## 5 Introspection

It’s getting pretty tight on space in the office, but we could do with a few more clones, right? Considering the return on investment, the workspace requirements are a small price to pay. With only a 1% completion rate, the Introspection achievement requires you to have a total of 700 You buildings.

The total cost of all 700 buildings is about 1,663 duovigintillion cookies. Maybe investing in a cookie savings account wasn’t such a bad idea after all?

## 4 Often Mar What is good

Upgrades are a huge part of the game, often leading to significant improvements in your CpS. Given the exponential nature of upgrade costs in idle games, the more upgrades you get, the more expensive they become.

With only a 1% completion rate, you need to purchase a total of 700 upgrades for the Oft We Mar What’s Well achievement. There’s no one-size-fits-all answer to how long this will take, but investing in climb perks that improve the early game and your overall CpS will help you tremendously in this endeavor.

## 3 Seven hundred years old

This is where the problem really starts to increase. Think of all the buildings and upgrades in the game, from buildings like farms, grannies, mines, and cortex bakers to various upgrades that increase your CpS or click power. Well, that’s all important for this achievement.

With only a 1% completion rate, the Septcentennial achievement requires you to have 700 of everything. That’s right, you’ll need 700 of each building and a total of 700 upgrades. If you don’t mind a higher electricity bill, you might want to leave your computer on forever.

## 2 And a little extra

If you’re looking for the Rainy Day Fund achievement, which only 0.9 percent of players have achieved, then you’re probably already familiar with the incredibly high cookie amounts and milestones. Are you ready for what’s next?

For this achievement, you will need to bake at least 100 duovigintillion cookies in a single ascension. If you played the game completely vanilla and didn’t use the auto-clicker at all, you’d probably feel tempted to use it here.

## 1 And a little extra

That’s it, big one. With less than one percent of all players completing it, the And A Little Extra achievement requires you to bake at least 1 trevigintillion cookies in a single climb. If you stick to the two pillars of free games, time and patience, you will surely complete this ultimate achievement.

While it’s not necessarily a race, keeping an eye on upgrades and buildings each time they become available for purchase and clicking on wrinkles, golden cookies, or other on-screen events will speed up the process. But the most important thing is not to climb too early.