My son and I played our first game. we used the iOS app; I think it makes it easier since one does not have to use the CRT. We also used the app to roll the dice for tread attacks. The app is pretty handy though I wish one could keep track of OGRE weapons etc.
I think the OGRE game is fun not sure if GEV would be everyone's cup of tea.
I knew a gaming group that used to use STARFIRE and OGRE/GEV to run a long term campaign (kind of like a paper 4x game before 4x was a word). Starfire for space battles and then Ogre for taking over another player's planet.