Apogee has released Xenophage: Alien BloodSport as freeware. You can download it from the related links section.
Xenophage means "alien eater".
Xenophage: Alien BloodSport version 1.0 was first released on April 26th 1996, although a public beta was released on December 29th 1995.
The advertising mentioned that the arena zooming was unique to itself, but it was in fact featured in some popular Neo Geo fighting games years earlier.