The short answer to this question is: The strengths of one medium are not the strengths of another. There is a vast gulf in expectation between preparing to watch a movie, and preparing to play a game. We expect different things from each. With a movie, we want to relinquish control and be swept away by a story, its characters, the settings, and the emotions they engender. With a game, we want the satisfaction of victory through direct control, overcoming a series of increasingly difficult challenges to our intelligence, reflexes, and skills. Given that these two goals are polar opposites from each other, we shouldn't be surprised by our inability to have the best of both worlds. Yet, there have been times when we've come pretty close.
Mortal Kombat is an instance of both genres complementing each other fairly well. You might not call it a great movie, but it's not a horrible one, either. So what made the difference? First, consider the story: the heroes of Earth are called together to fight the champions of another realm, or face the destruction of their world. Simple enough. For the game, that was all it took to serve as the spine of the action, providing just the barest believable context for the action that followed.
The movie took this spine and built muscle around it by delving a little deeper into its main characters' histories and personal motivations. Yet it didn't go too far; it took its basic premise seriously, but it also recognized the inherent absurdity of the combatants' special abilities and didn't try to provide a reason for any of it. That's always one of the problems with translation: knowing when to back off.
Second, the movie delivered on its unstated promise to expand upon what fans of the game already knew. That is, audiences were treated to lush environments, stunning set pieces, and fights with good pacing and action, all of which helped to breathe life into what had been until that point a fairly static two-dimensional universe. Players wanted to see their favorite warriors in the flesh, executing their special moves in living, breathing battles that often looked better on the big screen than the small.




