"Armageddon / Runaway Slave" is a 12" vinyl release featuring Sister Nancy and Mad Professor. It features Sister Nancy's vocal track "Armageddon" alongside various dub versions by Mad Professor. The B-side of the record includes Mad Professor's instrumental track, "Runaway Slave". The release is on Mad Professor's Ariwa Sounds label. The "Armageddon" track is described as a "wicked steppin' roots cut" with a singjay style vocal from Sister Nancy, over a tough, stepping rhythm, expertly dubbed by Mad Professor across each cut.