It wasn't the first real time strategy game, but many of the concepts developed here would later serve as inspiration for pretty much every series that comes to mind when RTS is mentioned these days. While you don't control a massive army in this game, you work the strategy element via your mech, recruiting units and issuing orders as you fly around doing your own thing. It's a fun game in its own right that constantly keeps you occupied and makes time playing it just melt away.

I don't know how it differs from the original since it only came out in Japan at the time of this writing, but even as a second outing, this thing was a slam dunk for Technosoft.