i think hund_schraube (whatever his name is ) has been meaning to tell this on the Q2 updates thread on the old board. i forgot to reply on it for this one though. its basically Quake 1 with converted Quake 3 models, maps and weapons plus some few Q1 map favorites and bot support.
you can download it <a href='http://files.filefront.com/2128935' target='_blank'>here</a>