Age of Conan landed the #1 spot in both Sweden and Germany, surpassing even Grand Theft Auto IV.
Take that with a grain of salt, though, as the PlayStation 3 and Xbox 360 versions of GTA4 were counted separately, and each appeared in high spots in both countries' charts. It seems likely that in Sweden, at least (where GTA4 occupied second and third place), GTA4 still outsold AoC when all platforms are added up. In Spain, AoC placed fourth.
Funcom has already launched additional servers to accommodate an impressive player base. AoC might get even bigger when it goes cross-platform.