Ultra Combat [Blade & Barrel]

Developer: Software Creations
Players: 4

Fly helicopters and drive tanks across more than 20 levels with diverse terrain, including sparse deserts, industrial factory sites and towns. Enemies include both humans and aliens. Mission objectives are simple destructive tasks, aided by the collection of various power-ups(missiles, shield upgrades, repairs, and speed-ups).
Apparently there was a heavy focus on the multiplayer aspect of the game.
In April of 1997 it was decided to overhaul the entire game "Everything from the gameplay to the game engine is being reworked," said Allen Lewis, GTI's communcation manager. Subsequently the game was cancelled.