When you say 'web based game' that makes me think in terms of html, javascript and browsers. But when you talk about a 3d map for exploration, that sounds more like opengl or direct3x... and no web (except if you are thinking in applets or something like that).
Could you be more clear about
what kind of technology do you expect to be use?
Minecraft its an online (no web) game. It may be done in opengl
over 1 year ago