You'd usually be out of luck, but there is a chance with this particular game:

'Q: On which platforms will Valheim be released?
A: Valheim will be released on Windows and Linux via Steam. A Mac-version will be released if there is any significant demand for it. There are no plans to release on other platforms as of the time of writing but we won’t rule out console versions in the future.'

Source: https://www.valheimgame.com/faq

Probably worth contacting them to state your interest in it. Apparently the lead dev is a Linux user, so evidently they have some appreciation for OS's other than Windows.