House rules and revisions for first edition AD&D From the introduction: This appendix of house rules for playing AD&D first edition campaigns set in the mysterious east is meant to be used with AD&D Revived. It is a quick adaptation — a sort of orient express — and does not require the Oriental Adventures book (from which it departs markedly in any case). Rules changes follow the same order as topics in AD&D Revived. Again, these are for my own campaign and reflect personal preferences.