First, Myth is a beautiful looking game. Still, it manages to be fun enough for a while, and there is always room on the computer for more large scale, fairly pointless, bloodshed. The worst flaw with Myth is that it is a pain in the ass to play. In 1983, a simple game with horridly and unnecessarily complicated controls was common enough, the industry was still young. But in 1997, fiddling about with far too many buttons than is necessary is annoying and the sign of poor design and programming.
Myth is an interface disaster.
The game requires the use of mouse and keyboard simultaneously, and this is a terrible sin with regard to computer game interface design. A divided, or split interface, destroys immersion for the player by requiring the mastering of two different and complex control mechanisms at the same time. This splits attention between the screen and the control systems, divorcing most players from full immersion in the game. Full immersion can only occur when the interface is intuitive and elegant enough to be utterly ignored, to become so much an extension of the player, that it requires no thought. A divided interface requires most individuals to look down from the screen, and rewards only those with the skill to become adept at 'touch typing', the intuitive mapping of motor skills to keyboard.