Seeing as I'm hopelessly addicted to Portal and Portal 2, I was pretty excited when we came across Asantee's new game Magic Portals. Basically, it's a physics-based puzzler that revolves around the whole portal concept. While it obviously isn't exactly unique, it is absolutely entertaining and fun to play.
So as I said before, the whole game is based on portals - hence the title. As we all know, portals aren't really a magical phenomenon, though.