Mentzer was soon promoted to Creative Director at TSR, and one of the tasks he was given was to collate and revise the various rules sets for Basic D&D in such a way that no rules, monsters, or other material that had been developed specifically for "Advanced Dungeons & Dragons" ("AD&D"), were borrowed. Mentzer's third edition of the "D&D Basic Set" (1983) was used as the launching point for a five-box series, which would eventually take characters from first level to godhood itself. This resulted in the "Expert" (1984), "Companion" (1984), "Master" (1985), and "Immortals" (1986) boxed sets of D&D rules - collectively known as BECMI. These were eventually translated into eleven languages, and millions were sold worldwide.