What is the ruling on creating virtual characters in electronic games by choosing facial features and their details, and does the ruling differ if the change is partial? And what is the ruling on playing such games during non-Muslim holidays?

We apologize for not opening the links. Regarding the choice of character details, if the images are of complete living beings, it is forbidden. If they are incomplete, then there is no harm. Playing electronic games on the prohibited holidays of the disbelievers does not appear to be forbidden, as long as there is no Sharia (definition)-based prohibition involved, such as glorifying the holiday or imitating its forbidden rituals. Adding special additions to the game on holiday days does not prevent playing, as long as it is free from Sharia-based prohibitions.