Cyber Tank is a game, that, based on the ads I originally saw in Rainbow, I had always assumed was a clone of the arcade hit Battle Zone, similiar to Rommel-3D. However, after taking a closer look at it recently, and actually seeing it in action, it is much more complicated than that... with multiple weapons (both offensive and defensive), mapping of terrain and other things. The basic premise is that you are in enemy territory, on an intelligence gathering mission.
This game came out quite late in the Coco 1/2's life span; in fact, the same year that the Coco 3 itself came out.
Title: Cyber Tank
Author: Ottmar Bochardt
Publisher: Mark Data Products
Released: 1986
Requires: Color Computer 1,2,3, 64K RAM, cassette or disk. Original version only worked on Coco 1/2 (overwrote GIME regs on Coco 3)
Download CYBER.BIN. Please note that this version is the original, and only works on a Coco 1 or 2.