Can I turn my game into a mmorpg?

No. Absolutely not.

The OHRRPGCE is not designed to support any kind of multiplayer, especially not multiplayer of the massive variety.

If you are interested in working on a customizable MMORPG, consider one of these projects instead:

• Stendhal
• The Mana World
• Graal (Not Free)
• Planeshift
• Worldforge

See Also

• How do I make a multiplayer game?