My first game I ever played was:
Lane Mastodon Vs. The Blubbermen... then later on played Dungeons of Kroz, PC Pool, and Leisure Suit Larry
Ahh, Dungeons of Kroz. I remember that one. My mom played the crap outta it.
Yeah, me and my brother played the crap out of it when we were kids. We thought that was the only Kroz game until a few years ago, I searched for it again to play it. Come to find out, that was only 1 of many, many Kroz games. There was also a recent remake of one of them with updated sprites instead of ASCII. Too easy though. Call me old school, but I prefer the ASCII characters.
A fairly recent, yet great ASCII game anyone should check out is Dwarf Fortress. It's free to download. Of course there are graphic packs so you can add graphics. I personally like to play Survival mode, as it resembles an RPG with your single character, rather than Dwarf Fortress mode, which you can build a fortress, and attack, or defend your city. I don't know much other than the Fortress mode though, since I could never figure it out, neither did I really bother with that mode. Great fun if you can get into it. Look up some videos on youtube first though. Preferably a tutorial for the different modes before you jump in blindly.