this conversation has been had before. Can’t remember it if was here in the forums or on Discord. Was that you as well?
Theoretically, of course it could, mainly b/c anything could. Many of the games like that used basic concepts from DnD for attacks and defenses, so it wouldn’t be hard. It would all be in the background for the rolls anyways and then just skill trees of feats to add stuff on.
Naturally it would be pretty difficult for some things, as they are up to creativity of players and GM, so you’d lose a tone with that. Have to strictly define things like phantasm, etc.
It could be done, and the license would probably extend to it. But as in all things, your best bet is to talk directly to Seventh Sphere and/or a lawyer to know for sure, so not totally feasible to answer from just members of the community.