eheh i was considering some kind of rpg too.. but the idea is not that easy to expand One should create 4 "worlds", and design a whole lot of models and levels..

I've thought of some unit for an RTS too. I considered giving 6 unit to each race with this schema:

weak unit
normal melee unit
normal range unit
big unit
magical unit
machine unit

So it could end up in this way:

NINJA:
thai chi fighter
ninja katana
ninja shuriken
samurai
shaolin monk
siege mobile tower
PIRATES:
ship-boy
pirate sabre
pirate pistol
captain
cooker
cannon
ZOMBIES
skeleton
zombie
zombie fleshtrower
giant spider
lyche
catapult
ROBOTS:
scout
robot1
robot2
armored robot
repair robot
tank

The only problems is that this design require 24 models just for the units, plus all the buildings etc etc.
So i think i wouldn't go into this

I'll try to think of a gameplay that just needs one models for each element