Yeah, this definitely was not a 3 monitor arcade game. This 8-bit version is pretty faithful to the arcade as was the 2600. This was one of my favorite early 8-bit arcade titles.
"it was played on three monitors in width."
I though this wasn't too bad a conversion of the arcade game. More variety than most shoot-em-ups of the time, at least.
@Jim Kuchera: Umm... what version of Vanguard have you been playing? The original arcade machine was a single-screen cabinet as you can see at the Killer List Of Videogames:
The 5200/800/XL/XE version is actually a pretty good port of a fun game!
The co-op version of this game was remarkable in that it was played on three monitors in width. It was a fantastic arcade game that took your breath away for its beauty. Though this 8-bit translation tries to render the game faithfully, it can't come close to the original arcade version. This game is not only available for the 5200, but the Atari 800/XL/XE group as well. I own it, but seldom play it though the musical score is worth listening too. Some games just can't be ported well because of the uniqueness of the original. Pass on this one.