CD games. Pretty sure repro HuCards aren't a thing.
People have been talking about labeled bootlegs of existing games, though. The PCE community seems to look the other way on bootlegs of released games as long as they're clearly labeled. It's kind of odd. I don't see people getting excited about labeled bootlegs of games like Hagane, MUSHA, or Little Samson or anything like that.
And I keep calling them "bootlegs" instead of "repros" because I feel like that term should only be reserved for games that either weren't officially released or weren't released in certain regions.
Like similar platforms of the time such as Sega CD, the PC Engine CD games don't have copy protection. You can use CD-Rs, or unlicensed pressed CDs.
That makes sense. I've never got a repro personally, although I was gonna when that SNES game was finished a year or two ago? The action/platformer with the dwarves. It looks so awesome. In that case, it was more like an unofficial release.