RPG World Online
RPG World Online (RPGWO) is an online, persistent, massively multi-player, role playing game. It is written entirely in Visual Basic and uses API for graphics and Direct Sound, well, for sound. It is a dynamic world. Maps can be changed and all items and such can be made and/or destroyed. An empty world in which players can build it the way they want.
Combat (of course)
Player improvement and development based on skills system
Magic (gotta have it)
Chat system (including offline messages)
Land ownership
Weather (rain, snow, drought, etc)
Water flows (like to lower elevations and floods too!)
Nature (plants and animals grow (and die!))
Trade skills (blacksmith, farm, mining, tinker, jeweler, etc)
Day/night effects with lighting
Dynamic plot (players affect outcome)
Events (like sacking a city with monsters)