Tank MMO, with arcade gameplay, list of upgrades (3 types of guns per one vehicle, for example), few trees of progress (tanks, self-propelled guns, light and heavy). In initial release soviet and german AFVs, later US, japanese etc. World of Tanks is non-historical game, but all tanks is real - production vehicles, prototypes of "paper tanks". Also german and soviet tanks can be used on one side. No "nations", only few ways for progress.
T-34
Tiger (in World of Tanks all german vehicles is grey. Maybe not good from historical side, but ok for gameplay)