Technically, there are no "PAL" games for the official PAL Turbografx. Those sold here were just US Turbochips. The CPU of the PAL console was clocked down for PAL-50Hz and the RF output was modified to PAL colour. I think these systems were sold in the UK?
Then as far as I know there was some France based distributor called Sodipeng, which did just imports of the PC Engine. I guess they added PAL RF output or RGB output as simple modifications if needed. Maybe even in PAL-60Hz to retain the original speed of the games, which were simply Japanese or US imports. But I don't think Sodipeng was officially sanctioned by NEC or Hudson.
Please correct me if I'm wrong, thanks.