All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah and that Muhammad is His slave and Messenger.
If these video games are permissible (involve no religious violations), then there is no harm in playing them, spending money on them, and enabling your siblings to play them. It is also permissible to sell them.
However, you should not spend too much time playing them, or rather you are forbidden to do so if this leads to neglecting an obligation. We have previously explained the conditions for the permissibility of playing video games in fatwa 259372.
On the other hand, if these games are not permissible in Islam, then it is not permissible to play them, buy them, or sell them. Also, it is not permissible to enable your siblings to play them. In case it is not possible to benefit from these games in a lawful manner, then they are to be destroyed.
If the games are permissible, then you do not bear the sin of your siblings or others to whom you sell such games if they use them in disobedience towards Allaah after you die.
Nonetheless, a Muslim should utilize his time in what benefits him in his religious and worldly matters, and he should avoid being addicted to games that would consume his time, as a person will be questioned about his time, as in the hadeeth that reads, "The feet of a servant will not move on the Day of Judgment until he is questioned about his life: how he spent it…” [At-Tirmithi]
In this regard, please refer to fatwa 86533.
Allaah knows best.