I am not sure, if these questions has been already posed and/or answered, so forgive me if yes.

1. How many star systems will be available in the final version. You can give us a hint? How many planets will be the max per system? (In MOO2 there have been AFAIR 120 systems or so)

2. Is there a cap on the amount of ships a player can have?

3. Is there boarding combat between marines like in MOO2?

thanks for the infos. I am really looking forward to your game.

The current default map has 43 star systems, and there is a maximum of 4 planets per system. The maximum number of stars will be determined through testing of what the engine can handle, but I would not be surprised if the number was 200 or more.

There is not currently a hard cap on the number of ships, though each ship has a maintenance cost, and so there is a finite number of ships that your economy can afford. The only engine performance limitation would be the number of ships that can be in one battle, and this will need to be determined through testing, but it should be well north of 100.

Yes, it is possible to board and capture ships.