  We investigate perturbative thermodynamic geometry of nonextensive ideal
Classical, Bose and Fermi gases.We show that the intrinsic statistical
interaction of nonextensive Bose (Fermi) gas is attractive (repulsive) similar
to the extensive case but the value of thermodynamic curvature is changed by
nonextensive parameter. In contrary to the extensive ideal classical gas, the
nonextensive one may be divided to two different regimes. According to
deviation parameter of the system to the nonextensive case, one can find a
special value of fugacity, $z^{*}$, where the sign of thermodynamic curvature
is changed. Therefore, we argue that the nonextensive parameter induces an
attractive (repulsive) statistical interaction for $z<z^{*}$ ($z>z^{*}$) for an
ideal classical gas. Also, according to the singular point of thermodynamic
curvature, we consider the condensation of nonextensive Boson gas.
