Although it may look extremely basic, Dragon Slayer is an important game in the development of Japanese Role-Playing Games. It is a real-time action/exploration game where you control a fighter who must collect gold, orbs, potions, and various other useful items, inside a scrolling maze that is crawling with deadly monsters.
Dragon Slayer was initially released in 1984 for the PC-8801, PC-9801, X1 and FM-7, and the MSX version followed in 1985, being ported and published by Square. It was, in fact, one of the earliest releases from Square.
The King of Grabs 