R—Role Playing Game Association tournament modules, R1–6 were also available to RPGA members. R1–4 were later revised and abridged as I12. Mentzer initially intended the "R" series to take place in Greyhawk (on a different continent from Oerik) as part of an "Acquaria" or "Aqua-Oeridian" campaign. The original concept was to use these modules to form the basis of a new Greyhawk boxed set, although TSR never went forward with these plans and as such the modules are not officially for Greyhawk.