RE: World of Tanks - online game
I did play but the game is too infuriating to play for longer.
It is basically a skilless turkey shoot, I believe is the American phrase. Unfortunately the many flaws in the game, such as the spotting system, are likely to be there when the game goes gold. The balance between the factions is biased towards Russian armour.
The US tech tree is almost entirely made up of paper panzers and the German tree as well. Match balance is improving, although most of the time, if you use a light or medium tank you will be placed in a match against armour that will one shot you from a great distance, at least it might be, since you can't see more than a few hundred feet you never know!
I would not recommend this game, although I would really like to as there is not exactly a lot of games out there that can be picked up and played for a spare 15 minutes.