These are several Blupi fan projects.
These are applications developed by third party persons - not original developers of Speedy Blupi/Eggbert.
Daniel Roux, the original author of Speedy Blupi I/II and other games, mentioned, he is happy about these projects.
Fan projects and modifications are absolutely allowed and they appreciate the fans' enthusiasm. as long as the fans aren't doing it for money, it's all cool
References
Pages in category "Fan projects"
The following 10 pages are in this category, out of 10 total.