I finished the "Campaign", a kind of super tutorial including a tenuous thread manager but inciting to see more. The 2.51 version is quite playable and if the trade is still tweaking to resemble the previous X, this will probably be done in December with 3.0 and a DLC that will reward those who have paid dearly for teething (bags). For me as a fan of the series, X-Rebirth is a good and affordable introduction to previous drafts, much more difficult to grasp but so addictive by their beauty and depth, allowing to express the empire builders military and commercial. If you like the Space Opera treat yourself, it's beautiful, fun and inexpensive.