I'm looking for some similar games like:
Jagged Alliance 2 - turn based tactical strategy (prefer 2D, but a good 3D with nice models and good camera will do as well - I hate new Jagged Alliance games as camera is totally screwed - limited).
Some space combat game like Space Empires Starfury where you can buy yourself a space ship and then upgrade it and so on and a lot of space combat around. I tried EVE online, but I don't like to be limited with moving and combat is pretty boring there - also not enough upgrading.
Also all suggested games need to run on windows 7.