Japan is receiving a huge selection of PS1 games to download on the PLAYSTATION Store, starting 4/26. The following games will be playable both on PSP and PS3 systems equipped with firmware 1.7:
Spectral Force (Idea Factory)
R-Types (Irem)
A.IV. Evolution Global (Artdink)
Resident Evil Directors Edition (Capcom)
Bishibashi Special (Konami)
Arc the Land (Sony)
Ore no Shi wo Koete Yuke (Sony)
Gunners Heaven (Sony)
Ganbare Morikawa-kun Ni-go (Sony)
Marl Oukoku no Ningyou Hime (Nippon Ichi)
Tekken 2 (Bandai Namco)
But, that's not all.The Store will update with these additional titles, which will not be PS3-compatible (for reasons unknown):