Ok, thx, il try to make my best attempt using the guidelines
Personally i have also heard promos been called "official copies" meaning copy of the game
To complicate things same releases for example ps3 might be sent disc only or with the cover, theres also retail games that have been marked with stamp or/with cut corners (like music promos are sometimes cut/holes punched etc (collect those also
) ) to be promo games, games that have covers marking them as promo but inside its the normal retail disc and instructions, nokia n-gage promos are marked "Gold master Review kit" and they might have games marked "proto" or different versions etc.etc. so collecting this stuff is interesting
I collect promogames, presskits and also all kinds of media etc. material (and of course normal retail games)