J-Snake, that is true but really 'RPG' stands for 'rocket propelled grenade'. But if your talking about a role playing game there's this wounderful new thing called Google.
EDIT: depending on which acronym he was thinking about I'm now scared
Hi There!
I would recommend 'Crystal Space'. It is a game builder (free roaming) and is completely free at http://www.crystalspace3d.org/main/Main_Page
Hope this helps,
In the famous words of arnymate -
Kind Regards mcbennybob
There are a lot of ways of making your own games. For example there is this program called RPG Maker I know it came out here in the US. You could also check out the gaming forums such as Atari Age.com which I am also a member of. As there are people creating games there all of the time for even the older systems as well as computers. I recently downloaded a "Home Brew" PC version of Mario Brothers.
I have found a new rpg software designer and its called 3dRad.
Its ery trustworthy and reliable. Its mostly for car games though.
Hope this helps - Mcbennybob