Help and advice

Welcome aboard Martin :)

I could be mistaken, but from first glance I'd say you need to plan this idea out a bit more. I'm basing this purely on the fact that I can't quite understand what it is you're trying to get help with. I'll take a stab at it, but like I said, I'm unclear as to what your question really is or what the problem you're facing is...

Am I right in thinking that you have the world and then a number of hexagon spaces (let's just call it 20, for the sake of it)? And then you need a way to signify what space belongs to each player?

If this is the case, then the two options I see are you either a) Give each corporation a set of tiles which they place over each piece when they take over it; or b) Have each grid/section marked by a name or number, which has a corresponding card, so the player who takes over a section can find the corresponding card and add it to their hand.

The problem with OPTION B is that at a glance it's unclear who is in control of what sections. Whereas tokens will make it clear at a glance the separation of the board.

If you can elaborate your problem a bit further it might be easier to help :)

Having done a little digital game development, I would recommend something like GameMaker for this as it's straightforward and quite visual. However, creating something like you're describing takes a lot of work, why don't you make a physical prototype of your game first, work out all the mechanics and then create it digitally when you're happy with the design?

You'll be throwing out a lot of ideas as you progress, and it's much easier to do that when you're using bits of paper than with a big ol' codebase and a ton of assets. Plus, as you play your paper prototype you'll grow to love your game, which will give you the drive to get the digital version finished.