Hi, and thank you very much for the interest! Unfortunately there is no Linux port in plans as of now, as we don't have a Linux machine to test/build on. Sorry about this, we'd much prefer it if everyone who wanted to try the game had the chance to do it.
If you still want to experience Runo, we may suggest watching one of the Let's play videos. There's plenty to be found in the comment section here! The one by Button Pushin' Cushion reads through all the journal entries, so that might be a nice one :)
Yeah, installing linux is not the problem, the lack of a machine to do it on is :D we may still consider this in the future if we get the resources needed. There would still be work to do with actually getting a working game built, we actually tried the default linux build straight out of Unity and it turned out it didn't run correctly at all when we had someone test it remotely.