I'm experiencing again with Esenthel:
controlling 100 characters with physx and navmesh pathfinding having really cool PSSM shadows,
by 215 lines and really little editor works
(imported my textures, a skycube, an L3DT terrain heightmap and texture blendmaps, and a .ms3d bone animated model I'm also using in 3DGS, plus some default buildings and palm trees):


Free world editor for 3D Gamestudio: MapBuilder Editor