I understand how difficult it is to build an online game, especially real-time MMOs with seamless maps. > The difficulty is balancing how much of the game runs

I understand how difficult it is to build an online game, especially real-time MMOs with seamless maps. > The difficulty is balancing how much of the game runs on the client However, it's important to have the mentality to build on the server by default. And try other optimization before give up to the client. The reason that games are fighting this cheating surge is mostly due to the mindset is more "security bolt-on" in the game industry, instead of "security built-in" which you could see more in Web development.