Whether he can legally or not is another matter entirely, and thankfully "EULA" writers do not make the law.
It's my code. If you think it legally unenforcible, at least show some respect for that.
Oh, sorry, I know, I'm red and bad. I shall not be respected because I am evil.
Sigh.
@tokai:
I assume that's only a coincidence, or?
No, not really. When we started Heretic II we felt that StormMesa would be too slow (more so because it used the bad idea of indirect Warp3D). The original Quakes used MiniGL. The idea was to have a GL that is so small that it isn't encumbered by the functionality that the Quake 2 engine doesn't use. MiniGL was the result.
@jupp3:
And I sure can't see any mention of such restrictions on my Heretic II box...
The H2 EULA says something like "grants you a license to run on AmigaOS" (only with more words). But then, EULA's aren't enforcible through the courts anyway.
@sdesros:
I'm just wondering if I should box my Hyperion software and send it off for a refund? 
On what basis? Our games are written for AmigaOS. It clearly states so on the box.
Go on using MiniGL on MorphOS, I don't mind. I just wanted to bring this minor fact to attention for the next round of Hyperion badmouthing. Maybe you'll find that certain things would be missing if it wheren't for us.