A: How easy will it be to just pick this game up and play?
H: That has been one of our obsessions, accessibility, its been hard to get into our games. So we have made everything we possible can to make this our most accessible game ever and I think we have succeeded with that. We have our in-game tutorial, the advisor system, and we have given the GUI a lot of thought to not make it so overwhelming but to be easy to use.
A: I spoke with Dan Lind (Hearts of Iron 4 Team Lead) and he said that they failed with that in Hearts of Iron 3, it was too much information and not the greatest GUI.
H: Yes, thats the thing with most of our games, those who arent Paradox fans has a hard time to get into them and that is something we have really been working on improving.
[..]
A: How steep is the learning curve in Stellaris?
H: It's looking good in Stellaris, thats one of the good things with 4X games, everyone starts small and you get to learn the game while growing. It gives us the advantage to games like EU IV where you can start as an already big nation like the Holy Roman Empire and have a lot to take care off which can be very overwhelming, but here we can introduce the players to one feature at a time. You have rather few technologies and buildings at the beginning, like you usually do in these types of games, and that makes the learning curve much easier to get through.