Hi iwan,

The demo is only 5 missions long by design. The current Early Access version with a total of 7 missions is available on our Steam page. We will be making updates with additional missions and features as well as general improvements on a regular basis.

Earth Liberation is coming to Steam Early Access on December 15th, 2016

http://store.steampowered.com/app/563490

We are also running a Headtalker campaign. Please help us share the news. With your support we can destroy the aliens.

https://headtalker.com/campaigns/earth-liberation-...

Hi, we are planning to release a Linux version in the near future. We will be sure to let you know when it is available.