I'm going to go out on a limb here and say that Battle Zone was the grand daddy of First Person Shooter! Sure, it wasn't exactly like Doom or Counter Strike, but it was a shooter, and it was set in the first person. Oh, and it's pretty damn old, too.
The Lynx version of Battle Zone really isn't much of an update, but it does recreate the fun of the arcade game, while reengineering the control scheme. This upgrade alone is worth the price of admission. Finally you will be able to play Battle Zone without fighting the controls more than the enemy.
For anybody old enough to remember the original Battle Zone, the arcade game was the equivalent of entering a submarine. No, really! You had to step up to a pair of goggles and the navigate around with two joysticks, and two buttons. Sure you could get used to it. Sure, it might not even bother you after one or two plays. But after you're done playing this game on the Lynx you'll wonder how you ever got by with the two joysticks. This game plays flawlessly.
The graphics recreate the vector graphics used in the original game. The sounds are dead on. And frankly, this game is just plain fun. The only complaint I really have with this game is the over all repetition of the levels. Each level has you doing just about the same thing non stop. This gets a little old, but the game offers enough of a challenge to keep your interests for quite awhile.
Battle Zone 2000 is recommended without a question. If you are a fan of first person shooters and you want a Lynx game, this is your match! Now, go and enjoy it.