This is more CSIO street info you need to run the original, real-deal, 1970's version of City State of the Invincible Overlord! This is the most awesome & storied metropolis in gaming history. This is absolutely terrific that the team running Judges Guild is making these old pieces of gaming history available in the original format (my physical copies are too fragile to game with!). Thanks Judges Guild!

This is the original real-deal City State of the Invincible Overlord! This is the most awesome & storied metropolis in gaming history. However, there is more CSIO street info you need in Initial Guidelines Booklet I. You also need a map, and DriveThru RPG only sells a PDF of the player's map to the city state. Note also that Initial Guidelines Booklet J is not available, and that contains information about Thunderhold and Sunstone Caverns, both about 100 miles to the north above city state. So, whomever is handling Judges Guild, please see if we can get Initial Guidelines Book J and a single copy of a judge's map for City State. That would be awesome historical goodness!

An excellent overview of his devilish plane of Gehenna by Geoffrey Dale I only found on DriveThru RPG (it's not on Dale's website at Spellbook Games). Dale authored the old Judges Guild product, "Inferno" which is at least as deadly as "Tomb of Horrors" and doesn't kill you with traps. This primer explains the infinite plane of Gehenna and how to escape PC's must travel through the Inferno (Malebolge). Our gaming group is using this to enhance our gaming through "Inferno," but the primer really is intended to flesh out the forthcoming "Inferno: Journey through Malebolge" for a complete hellish experience. The product uses Dale's own game system, "Portal to Adventure," which at first glance seemed obtuse (GTET?), but is actually pretty simple (oh, "Greater Than or Equal To"). In any event, most stats such as damage, HD, & HP are AD&D compatible and the remaining stats can be converted in a straightforward way to AD&D rules which is what our group is doing. A great malevolent setting at under a buck!