The first details of the South Park RPG have been revealed by creators Matt Stone and Trey Parker in the latest GameInformer magazine.
-Characters will be completely customizable.
-There will be five classes to choose from, wizard, paladin, adventurer, rogue, and a fifth unannounced class that will be made up by Cartman.
-Obsidian will be using the Dungeon Siege III engine.
-Matt and Trey will be writing the script and dialog.
-There will be a Final Fantasy like materia system and a summoning system.
There are many more details that can be found at NeoGaf. Be warned that there are some spoilers.