[jamiltron]

People were porting it to Linux with SDL at Handmade Pengiun: https://davidgow.net/handmadepenguin/

I am not sure if they've kept up or not, as I haven't kept up with the series, despite my attempts. Nothing against the series, I just haven't taken the time to follow yet.

[joeld42]

Not sure if it's the same one, but there is a SDL-based port that is up-to-date. There's also native mac ports in various levels of completeness.

Casey recently added a github repo (with auth) and so it's a lot easier to keep up with the changes.