Originally Posted by
Exophase
It's much easier to port two games than to write a Saturn emulator. Especially for a handheld that can't handle it at all.
Lots of PS1 era games were ported to PSP (yeah, I know Sony did an emulator too but a lot of ones were done that don't use it), so not surprising that a couple of Saturn ones would be too.
By the way, the rumor was that GiriGiri was used. GiriGiri couldn't run anywhere near fullspeed playing Panzer Dragoon Saga on my 850MHz Celeron, which is much much more powerful than a 222MHz PSP.