As the title says if there's a linux build I'll pay 30€ for my own copy and I would encourage every other linux users to match this or go as high as they can afford.

Thank you for your interest in the game and offering such generous amounts of money!

As much as we would love to provide Linux and Mac builds now, I am sorry we currently cannot. We are a small dev team, and this is an ambitious project, so we have to focus.
Nevertheless, we will provide Linux and Mac version at some point.