I see. but yeah, still no unfortunately. It seems it's a very specific NG port, which really is a bummer, because again, if it's an emulated Amiga, who cares about the 'port' when you can play it on a PC/Mac which is what's underlying the AmigaNG's anyway.
To me, an Amiga port would be on an Amiga, under WB3.1 or > with KS 3.1 or >, accelerated of course and maybe even Vampire compatibility, which BTW WOULD allow you to most likely run it in Amiberry, but the AROS rom is not 100%, so hit or miss. However, Amiberry would work with 3.1 Kicks, so there's that. But alas, just talk.
I mean, even the Sonic port for the 64 was an actual port that will run on a REAL Commodore 64 (w/REU, but hey). VICE totally optional. To me, THAT's a port.
Besides, with what's available through Eris, you're nieces and nephew will have plenty to keep them busy.
Me, I just spent $12 on this before remembering why I didn't buy it in 2018. I totally forgot what this actually was. But oh well, maybe it will be updated.
Good luck with your Eris Project.