Hell Revealed II had a long gestation, with development beginning in 1998. On February 14th 2000 a "beta" version of the megawad was released with 15 levels, and two secret levels. A number of demos were recorded on this version. The intention was to release the full megawad that year, but several years passed before Andy Olivera pulled the project together and released the final version. One of the levels, Beyond The Sea, was actually taken from an earlier Andy Olivera WAD, D2200EP1, released in 1998.