Well,
it is now confirmed that Cities: Skylines franchise will continue to use Unity engine for the next generation. But I noticed that you have not addressed the possibility of a future Cities: Skylines game utilizing their own custom in-house built engine (similar to how Rockstar Games did with RAGE engine for Grand Theft Auto IV and beyond after having had used Renderware for the last three Grand Theft Auto games). I am particularly curious as to what you would think about that.
Colossal Order is too small to sustain such a project and it would be a poor use of their time and money. IIRC they only have a about a dozen coders, whereas Unity can spread the costs of engine development across their hundreds of thousands of users. And Unity Pro subscriptions for a dozen developers come to US$24,000, which isn't even enough to pay the salary of a single engine developer! While there are some aspects of Unity that are a less than perfect fit with the city-builder genre (a
C:S city is really stretching the concept of a Scene to the limit), Unity's new DOTS platform is specifically focused on data-heavy simulations such as C:S and is now mature enough to be used in upcoming GSGs such as
Gilded Destiny and
Grey Eminence. So
C:S2 will probably be able gain access to new technologies that improve performance without increasing their engine costs.
The hints earlier in this thread that C:S2 may be moving to hexagons
might be preparation for that, since all three DOTS strategy games that I have seen use hexagonal tiles. That might be coincidence, in which case it tells us nothing about C:S2, but maybe the regularity of the grid somehow helps with memory location, or was a more reliable choice in DOTS' early stages. It's rather wild speculation though, so take this paragraph with a large pinch of salt.
i am worried about the game specs...
if it is more realistic, then i would need more ressources.
hopefully the realism is a bit of scaleable
C:S1 has astonishingly reasonable graphical requirements for what it's trying to do. I run it on an APU (integrated GPU) and it looks great as far as I am concerned. But I agree that it's likely that we will see a significant uplift in graphical requirements. I've been looking into buying a second-hand dGPU, but I guess that I'll now wait until I know what C:S2 needs.