Psychological horror with erotic and occult themes 'Lust for Darkness' is planned for Linux, however the developer wants to see demand.

Here's what they initially said:

We are open to Linux platform and it's possible sometime in the future, but we need to wait and see how big the demand is. Keep bringing your requests and they won't be overlooked.

However, Linux was actually a confirmed platform going back to their Kickstarter (see their FAQ). When queried about this, they clarified what they meant:

We didn't make it clear enough. Linux and Mac are still our plans for the future, but we are a small team who needs to prioritize their tasks. That's why we need to know how big the demand is on each system, to decide where to go first.

So, if you want to have it on Linux and be more of a priority, it might be an idea to let them know in this linked forum topic on Steam. It's still not great that we have to wait like this, but it's fair enough that a small team needs to prioritise.

It can be found on Humble Store and Steam.

You can see a trailer below, probably NSFW due to the themes: