Secret 15:
There was a PAL version of the TurboGrafx released. It looked the same as the US version, but it was grey instead of black, and received basically no support. The few games that were released (And it's actually unclear if there was ever more than the pack-in released) are the same as the US games - Card, code and packaging. Since the Hudson chipset didn't support PAL video the PAL-TG16 had another video encoder to convert RGB to PAL, and the system outputs AV instead of RF. It uses a connector very different from the AV port found on the CoreGrafx series.