I’m not familiar with Lunduke. Could you elaborate?

Lemmy is a free and open-source software for running self-hosted social news aggregation and discussion forums. These hosts, known as “instances”, communicate with each other using the ActivityPub protocol.

It doesn’t seem so. I looked on YouTube and someone cut together a lot of gameplay footage from different sources. It’s enough to get a sense for the game. It looks really cool. https://www.youtube.com/watch?v=uhhH_ocfqZw&t=957s