It is really hard to recommend a specific MMO game, because everyone likes something different. A game I like you may hate. Check out http://mmohut.com for a gigantic list of these free mmorpg / mmo games.
I use that site to find new games to play. Every few days I try a new game :) - It's a lot of fun because I try everything. They have like every single MMORPG categorized nicely with reviews, screenshots, videos and more.
Heck they even list the game's system requirements!. Best part is all the games are free, which rocks. http://mmohut.com/browser-games They have a huge section for "no download" browser MMORPGs as well.
Let me know if this helped at all.
Aces high its a small server based MMO all WW2 fighters, ships tank 3 sides to the fight real time, so if you gotta fly 500 miles, and you are flying at 600 mph, do the math dogfighting, everything Hafta take down bases, drop paratroops, bring in supplies to rebuild it and so forth Extremely fun.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.