As far as I am aware, games are built in studios, on local computers and how are hackers able to access their data? Do they have bad network security? I don't want to believe that they upload files on third party clouds because these files are very sensitive and these leaks include not only game files but personal data, including U.S. passport scans and etc.
But why do hackers always go for bitcoin as demand? Why not ask for other coins that could also be used and exchanged for whatever they want without being traced? There are coins like Monero (XMR), which is a highly recommended privacy coin.
Because bitcoin is popular and gains attention when you include Bitcoin in article's name instead of Monero. They'll know how to hide traces, so it's not something we have to worry about.