The XYZZYs are trying something new this year: every nominee must have an IFDB entry. While a perhaps bit wobbly in its homegrown editing interface, the IFDB nevertheless allows anyone to edit its existing game entries, or create new ones. In particular, a game’s creators are not barred from creating or updating their own works’ IFDB entries.
I stress that games you’d like to make eligible via the IFDB needn’t adhere to the classic parser-based IF format. This month I myself have added IFDB entries for both a web-based hypertext game and a commercial game-book adaptation for tablets, both of which I hope to see among the 2013 nominees. The competition’s post on the subject goes into more detail on what is and isn’t acceptable, under the section “Interactive fiction” — though it allows that this style of play does find itself in a period of definitional transition at the moment.