Panopticum

I'd like to mention a new MMO project by Wargaming.net World of Tanks. The game is very promising. It can't be called a true historical game but the tank models corresponds to their historical prototypes (machines of 30-50s). Details can be found here: http://www.worldoftanks.com/
Also a trailer from youtube: http://www.youtube.com/watch?v=ax2ilBa4Oiw

thermal

I can’t think of many “freemium” games that have truly captured my imagination.

hershey20

World of Tanks is a freemium 3D team-based massively multiplayer online game featuring historically accurate fighting vehicles from the 1930s to the 1950s. World of Tanks is a PvP-focused project that promises action and strategy based gameplay. In the release version, World of Tanks includes more than 90 armored vehicles from America, Germany and the Soviet Union.