I was just kidding, I really do not expect any legal issue with this project.

Contacting the current owners of the rights (Rebellion) does not seem easy, they have ignored me in several attempts ... so it seems that they are in other issues.
On the other hand, I am currently trying to contact Andreas Axelsson because, although currently he does not have the rights, I would not like to release the game without the permission of the original authors.