It is a d20 game system. Using the base of modern but it has heaps of changes.
Its a moderately simple game play system, but not as simple as modern or D&D 3.5.
It is currently going through a bit of a change from a hp system to an ability loss system.
So if you have some spare time and interested in helping me get the system working then reply here.
I have no pref for campiagn genre but it suits fantasy, horror, modern or scifi or a combo We can discuss your prefs.