You need to research their patents. But all patents that require a patent that you don't have is hidden.
In your case you likely need grav-copling patent, which requires large rocket motor patent.
We really need a visual tech-tree view of these patents in-game.
See: http://hazeron.com/mybb/showthread.php?t...54#pid2054
We could at least make a fan-made one and add it to the wiki. Anyone wanna help?
In your case you likely need grav-copling patent, which requires large rocket motor patent.
We really need a visual tech-tree view of these patents in-game.
See: http://hazeron.com/mybb/showthread.php?t...54#pid2054
We could at least make a fan-made one and add it to the wiki. Anyone wanna help?