We performed depositions of noble metals, such as Pt and Ag, onto quasicrystalline surfaces in order to investigate the nature of film growth on quasiperiodic surfaces. Pt depositions onto the ten-fold quasiperiodic surface of decagonal Al-Ni-Co quasicrystal yielded an epitaxial layer of multiply twinned PtAl 2 crystals with the aid of predeposited In, which acted as a surfactant. This is quite similar to the case of Au depositions on the ten-fold surface, where an epitaxial layer of multiply twinned AuAl 2 crystals was formed. In the case of Ag deposition, no epitaxial films were formed by similar procedures even under the existence of an In layer.