Why Did the SNES Mortal Kombat Have Sweat Instead of Blood?
It was not a technical limit and it was not the developers' taste. The SNES was the more powerful machine, and its port was the more arcade accurate one for picture and sound. The grey liquid that flies off every fighter in the SNES version is there because Nintendo's family friendly policies were a condition of release on its system, and Acclaim, which held the home licence, complied.
Sculptured Software, which made the SNES port, worked inside rules it did not set. Its project director Jeff Peters later said the team's hands were tied on gore, and that everyone believed the sweat and the altered Fatalities hurt SNES sales.
THE OTHER SIDE OF THE SPLIT
What the SNES was not allowed to be
THE POLICY
Nintendo controlled its cartridgesWHAT WAS CHANGED
More than a colourWHAT IT COST
The sequel tells the storyThe censored SNES version was outsold by the Genesis version by a factor of five, despite looking and sounding better. Co-creator Ed Boon later recounted that he had pleaded against the censorship on exactly those grounds: all it would do is ensure the Genesis version sold more.
Nintendo's own behaviour is the clearest verdict on the policy. After the Senate hearings and the creation of the ESRB, Mortal Kombat II was released on the SNES without censorship, and Nintendo did not take issue with its violence. The sweat era lasted exactly one game.