It took me much longer than I initially expected, but here is a new open beta release of Phase 2 :
This release includes the extensive ingame tutorial with 70 chapters (~25,000 words in two languages) that goes into every detail of the gameplay. It's aimed at starters that never played the game, as well as experienced players that want to read up on the game's mechanics and calculations.
Also included is the new 360° space backdrop as well as the improved globe shaders. I also added this backdrop to the main menu that got some functionality updates (e.g. new game options on the same screen as the nation selection) too.
Other than that there were some small bugfixes, changes and additions you can find on the changelog. The linux release for example will now display the globe on the intro and main menu without errors and finally displays special chars as intended (ü,ö,ä, etc.).