Well I finally did it and my son and I decided to create a tank battle game. We have dubbed it Tread Wars. I actually tried to create something like this a long time ago. I never had the motivation but with my son helping out this is actually pretty fun. Basically the game play will consist of several tanks battling it out. Hopefully hope to add multiplayer suppot to this game. I've been trying out the Power Render engine I like it just because its in C++ and it allows me to do things that are easy for me to get up and running. So far I got this pretty awesome screenshot of the terrain engine implemented.
You can view the screens at the domain I have setup Tread Wars Alpha Development