I know this may seem to be beating the proverbial dead horse, however I haven't seen anything specific to what language is best to terraforming and generation of a basic sandbox. Any suggestions as to what languages or even programs that can be tied into game development for interaction between static land and dynamic generation (i.e. characters, NPCs, item spawns, etc.)
What is easiest to understand? I am looking for something that I can basically get a functional prototype created to take to investors and have something to begin hiring and funding the massive project. I have played the game Second Life and liked the way the terraformation worked there despite it's huge limitations in movements in the terrain.