Hello, if you hear about the Hero Engine its cost for 25 Seats 5,000$ this Engine is best for develop any type of MMO Game, you can read more at: HeroEngine i have right now 24 seats for sale for one year. each seat im take 200$, if you wish to buy please contact me at: [email protected] here is more information about the engine: The HeroCloud service gives your team a complete system for developing and launching an MMO game, 3D virtual world, or online simulation. With HeroCloud a small team is freed from the chores of managing servers and network and they stay focused on building and creating their product. HeroCloud includes access to the all of HeroEngine, the leading platform for collaborative online game design. Your team is issued a set of accounts and passwords and you download the HeroBlade toolset to access your very own online world. No matter where your team members are located, whether in the same room or around the world, they meet in your world to work together to build your online world. Once you are ready to launch your world to your customers, HeroCloud takes care of the details. We provide access to global billing solutions, we give you a console to monitor your usage and performance, and we give you the ability to add and remove servers as needed.