Wonder Boy III: The Dragon's Trap (AKA Dragon's Curse and Monster World II Dragon No Wana in Japan) is a 1989 platform game by Sega and Westone. This game is a direct sequel to Wonder Boy in Monster Land and starts in the final lair of the previous game. According to Wikipedia, it is widely considered to be one of the best games produced for the Sega Master System.
AngerFist and OgreSlayeR rush through this game in a little over half an hour. Expect to see some speedy boomerang usage, manipulated boss fights, and a couple glitchy sequence breaks.
Note: This run does not collect the Tasmanian Sword (which allows the player to change his form at will). A run collecting the Tasmanian Sword would probably be considered in a separate category from this run.