Mortal Kombat: Special Forces is an action game for the original PlayStation. It was released in North America on July 30, 2000, and in Europe on September 29, 2000. The player to take on the role of Jax (a.k.a. Major Jackson Briggs) as he tracks down the Black Dragon. There were plans for a Nintendo 64 version but after Tobias’ departure and the release of the PlayStation 2 and Xbox systems, Midway management decided on a budget release of the game priced at $20.00 for the PS1 only. The N64 version could have been finished, but it was never released. [Infos from Wikipedia]
Thanks to Edward Kirk we can read more interesting info from the Mortal Kombat Special Forces’ development:
the game had a convoluted history which, with the departure of MK co-creator John Tobias from Midway, left it incomplete. The final release was only half the game that was originally planned, with the storyline shifting its place within the MK chronology
the game was reduced from seven levels down to five, and from two characters down to one (Sonya was originally playable, but then removed).
You can download a PDF with the full article written by Edward in here. It compares what was planned for the original game with the one that was released.
In mid 2018 Rhythm Lunatic found a playable prototype from the beta / unreleased version of the game. You can see some footage below!