Ah, the grande ol' year of 1998. Many people know that this was the "golden era" of ZZT... some have heard about it so much that it sickens them. However, there's no denying it; many great games came out that year, such as "Burger Joint", "Teen Priest", "Gem Hunter: SE", "_Death_", "p0p", and "Mystic Blade". This baby's one of them.
"You're Jackson Tough, the king's royal knight. You carry a gun with 10 ammo. Your best friend is Zarbedos, the royal Skycaptain. He's the leader of an army of Skyknights, who fly on Giant Eagles. You have a talk with him almost every day. He lives in the village. But first of all, you must talk to the king." The english of Young Herc wasn't quite what it is today, but the plot is good enough... and still better than many. What truly makes "Quest for the Immortals" so great, however, are the high-quality visuals and, most importantly, its simple-yet-addictive gameplay.
Firstly, the graphics. Herc's STK abilities weren't as good as they are today, but the colors and blends provide a fine atmosphere, and are pleasant to the eye. Secondly, the way the game plays is somewhat like the action genre, mixing easy interaction amongst characters with, of course, early ZZT shooting and item collecting. Herc manages to put the style together without commiting any "ZZT Syndromes" (as the famous help utility shows)
...okay, I've said enough. Play it.