Under "recent posts" the last post that it displays is 122d old. But there exist a few more older ones. The more important ones I found through the search function or links and categorized them so that you can see them in the directory. But I don't know, if I missed anything.
Seems odd that the list suddenly ends at a random day and it's just 4 months into the past. Probably just a certain amount of posts that it lists there? Then how do I find the older posts now, that are not categorized yet?

https://ashtorak.itch.io/starbase-simulator/community
Seems to be browser independent. So not a bug?