Daniele, I'm proceeding to remove Gweled from Debian Unstable now (which will also remove it from Ubuntu's devel series).
If you are able to port Gweled away from Clutter, please contact the Debian Games Team at [email protected] to get the game back into Debian Unstable. This doesn't prevent getting bug fixes for Gweled into Debian 13, but someone would need to prepare that stable update. Thank you, Jeremy Bícha

