Blood

Blood is a Build game developed by Monolith Production. ZDoom can read Blood's encrypted RFF archives and offers support for its sound format and related features, including using the Bloodbath Announcer ("BBA") for deathmatch games.

Randy had reverse-engineered more of Blood's data structures, but lost this work in a hard drive crash. Comments in ZDoom's source code explain that if Monolith ever released Blood's source code, a "ZBlood" port would have to be expected.