Is a Muslim sinful for continuing to play an electronic game in which the part related to celebrating the holidays of disbelievers cannot be avoided?

It is not permissible to celebrate non-Muslim holidays or innovated holidays, even if it is part of a game, because that constitutes participation in falsehood and an affirmation of it. Muslims have only two holidays: Eid al-Fitr and Eid al-Adha. Other holidays are either innovations if observed as acts of worship, or forbidden due to imitation of disbelievers. Anas reported that the Messenger of Allah, peace and blessings be upon him, said: "Indeed, Allah has substituted for you something better than them: the Day of Adha and the Day of Fitr." And he, peace and blessings be upon him, said: "Whoever imitates a people is one of them." If a game necessitates participation in these holidays, it is not permissible to continue playing it, and one must be wary of games that accustom a child to loving falsehood.