Hello,

I have seen here: https://www.planetvb.com/modules/news/article.php?storyid=331 that some Virtual Boy games OSTs were ripped.

And i need to ask: how did they get ripped? Which tools are necessary?

Thanks.

You just record audio from the headphone jack.

There is no standard sound/music format for Virtual Boy games. Maybe some games share the same format (for example, if they are from the same company), but at least some games have their own unique sound engines.