|Type||Game → Astro Barrier|
|Release date||July 26, 2010|
|Description||Finish levels 1-40|
Astro 40 is a medium difficulty stamp in Club Penguin, only available to members. In order to obtain this stamp, you must finish levels 1-40 in one game of Astro Barrier. Completing the secret or extra levels will not allow you to obtain this stamp.
- This stamp was released on July 26th, 2010, as one of the original stamps.