With the ETK we moved a bit fast forward.
I read somewhere that the Big Green itself was sold in 20 000 copies. It was a huge success. I overly underestimated this previously. No matter.
With all those the players came lots of feedback. They saw where the system lacks probably this is why they come up with the Second Code of Law. However they wanted to remake the whole system. They wanted a new book then they saw it needs two. Then they realized it's not enough and planned three new books which would reform the whole game.
So in 1996 they released the first book of the Summarium called: A Teremtés Könyvei (The Books of Creation) in the hope that in 1997 two more will follow: the Számok Három Könyve (Three Books of Numbers) and the Törvények Három Könyve (Three Books of Laws). The first was the description of the world the second two should have been the actual rulebooks with the system but they were never published. Instead they fixed up the Big Green and released the ETK in 1997. So the system remained the old one but they gave a bit more information about the world itself (as the Big Green had this only in a shorter form).

The Summarium still is an important book which changed the view of the players on the world. In the beginning Ynev was a high-fantasy world with absolute Good and Evil duality but supplemented with the human shades of grey as the world itself in the era of the game's present is a human dominated world where the ancient races are fairly driven out to the peripheries. The Summarium however created a picture which resembled more to a dark fantasy, made the human shades of grey darker and added a Nitzscheian-Machiavellian twist to some inhuman races of great power.

With the book came some much needed maps fairly similar to picrels.