   Iso or OpenGL
  I am just beginning OpenGL but have been a mac programmer for several years and I am beginning work on an RTS called Ground Zero.  I don''t really know all that much about Isometric programming or OpenGL for that matter but I am wanting to get my hands dirty and do a full fledged project. what do you think I should do with this.   -Carbon X-=Your friendly neighborhood Mac guy=-BloodSweat&Code 
  Why not isometric AND OpenGL? =) ;  Hey, he has a good point. OpenGL is just an interface to the 3d excel hardware. So if you use gl for you game you can use some 3d excel and reduce some of the load from the computer itself. Somethings that you do want to know is about perspective. When developing a 3d game, most people want things to get smaller as they further away ( just like real life  ) but in an Iso game you don''t want this. So you can use glOrtho and that will keep everything the same size no matter how far away it is or you can play with the camera (essentually change the focus). Read a book on gl you will get the idea. Ben ;  Yes, I second that.  We''re doing exactly that (using OpenGL for graphics output in our isometric viewpoint rpg) freedroidRPG, like on freedroid.sourceforge.net.  Since that game is open and free (GPL) you may inspect the code, graphics, checkout CVS, modify and redistribute under the GPL again. 