I worded myself wrong, it is a complex game, but there aren't a complex game open world mechanics. If they added many of those layers on top of multiplayer the game would be far harder to run, that's what I'm saying
you underestimate a lot of things that are very complex in W3. For example, if you take a mission in GTa, all activities are closed off. Its basically in instance. In W3 you can have 100 quest active at the same time, quest that have alternate pathways, a lot more options to a character state. Also there is plenety of npc that aren't just randomly generated like in GTA, if you look back twice, you will often see a different traffic. There are insides of homes as well. In a lot of ways its far more complex