How can I find out the rarest Steam achievement?

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How can I find out the rarest Steam achievement?
Posted On: March 6, 2023

Having completed the most difficult achievements for a couple of games, I started wondering how difficult the worst achievements can be. One well-defined measure for difficulty of an achievement is its rareness. Sadly, I don't know how to find global achievement stats for all Steam games.


What I want to know is:.


What is the most rare single player achievement on Steam, in terms of.


individual players?


percentage of players?


As any answer would eventually become outdated, I'm not asking that question per se. Instead, I would like to know how the rarest achievements can be found.


A good answer, then, depicts a method for finding the rarest achievements on Steam.


Question from user StackExchange saddens dancek at gaming.stackexchange.com.


Answer:

The rarest achievement (at the time of writing).


On 2015-05-20, the rarest achievement by percentage (with over 0 percentage completion) that is visible in the Steam community achievement lists was Escape in Counter-Strike Nexon: Zombies with 0.0001% of players achieving it.


Note that this information is probably obsolete by the time you read this.


The API gives very accurate numbers. Since 0.0001046398319886066 is 1/955,659 with very little error, one could speculate that there are 955,659 Counter-Strike Nexon: Zombies players and exactly one of them has got the achievement. Obviously any multiple of these numbers is possible, too.


Answer from user StackExchange saddens dancek at gaming.stackexchange.com.



[BACK]
How can I find out the rarest Steam achievement?
Posted On: March 6, 2023

Having completed the most difficult achievements for a couple of games, I started wondering how difficult the worst achievements can be. One well-defined measure for difficulty of an achievement is its rareness. Sadly, I don't know how to find global achievement stats for all Steam games.


What I want to know is:.


What is the most rare single player achievement on Steam, in terms of.


individual players?


percentage of players?


As any answer would eventually become outdated, I'm not asking that question per se. Instead, I would like to know how the rarest achievements can be found.


A good answer, then, depicts a method for finding the rarest achievements on Steam.


Question from user StackExchange saddens dancek at gaming.stackexchange.com.


Answer:

The rarest achievement (at the time of writing).


On 2015-05-20, the rarest achievement by percentage (with over 0 percentage completion) that is visible in the Steam community achievement lists was Escape in Counter-Strike Nexon: Zombies with 0.0001% of players achieving it.


Note that this information is probably obsolete by the time you read this.


The API gives very accurate numbers. Since 0.0001046398319886066 is 1/955,659 with very little error, one could speculate that there are 955,659 Counter-Strike Nexon: Zombies players and exactly one of them has got the achievement. Obviously any multiple of these numbers is possible, too.


Answer from user StackExchange saddens dancek at gaming.stackexchange.com.



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