Covering levels 1–5, the Starter Kit is a "basic set" for the Advanced Dungeons & Dragons 2nd Edition-inspired Myth & Magic retro roleplaying game. The first part of the book is for players and covers classes, races, action resolution, and spells. The last third of the volume is for the GM, and has monsters, treasure, magic items, reference tables, a character sheet.

Changes from AD&D 2nd edition include minor tweaks to stats (percentile strength is gone), all checks are converted to roll high (e.g. the target number for attribute checks is 24 minus stat), the calculations for THAC0 are shifted around (ACs are flipped, with 10 being the worst), and many spells are renamed (even those released under the OGL).