Slayers (the Game) was made By Hiryu. In fact both games were. If I remember correctly, the one you currently have is the second one. I don't know if he ever released the first one.

Slayers (The Engine) is Pretty much my next RPG platform. What and when it will be released seems to be an enigma. It was originally designed from the ground up to be the Directors Edition of FFVII until copyright scares changed it's focus to Punisher X-Treme. When Punisher X-Tream Failed the Mike Wallace Test, I shifted it's dev towards Legend of Landel, which is Basically Mystic Legend 2.

The reason it's called the Slayers Engine is because the Proposed Fighting Engine was designed to mimic the fighting style of the Slayers Anime. Ironically it's never been used for a Slayers Game. I should rename it one of these days but since I've been calling it that for almost 6 years now...

The engine Itself is designed with two things in mind: Speed and Scalability. In theory, it should be possible to make a completely different RPG without changing little if any of the code. This is a lot of the reason why so many games are associated with it. At this point it's had these games either considered, planned or in Development.

1) Slayers Duel - It was going to be a Quasi RPG fighting Game. You would basicially watch the cutscenes and then fight the battles in betweeen. Ironicially Never broke Planning Phase.
2) FFVII Cloud's Quest - Directors Edition - This got as far as consideration until the Monopoly CAD. There's a rant about it on my site if you want to read a ton about it.
3) Punisher X-Treme - This was going to be the next game in the Punisher series. Got as far as development and planning. We even got a storyline somewhere. Was Dropped when we decided that it was too risky of a game to be made with school shootings and all, even though the new storyline focused more on clones and alien technology rather than teacher violence. It was still in the school however, although it was renamed the compound.
4) Legend Of Landel - This is the Second Mystic Legend Game. at this point it's at the Development level with storyline and many of the images created. So far the game is Huge, and we're probably going to run into the same problems we ran into with FFVII. We're currently shooting for a release under 300K and hopefully this year. We're probably going to start finishing this thing After Mystic Legend 89 Is released, but Since Hiryu is moving right now and settling into a new job, it's going to be a little longer until it's released.
4A) NPO Vs Hays 2 - Something Survived - Another one of my shot's against Hays. I more or less needed something as a basic system runtime test for the Slayers Engine. It was going to be a real simple game (like a demo) of what the engine could do and how a game would perform under it. Luckily, Hays Games Co. didn't tick me or Hiryu off enough to follow through with this.

getconfg() on an Ti-89 will do it. keep in mind that it's AMS 2.0 or higher for this to work if I remember correctly.

Hiryu is around, right now, he's moving to Akron so he's kinda busy with his new job. He said that he's going to be busy for a least three months before he finishes Mystic Legend 89.

As for his site, He forgot the password awile ago and we basicially had to try every password he ever used for anything and finally we found it since any form of help at calc.org is pretty much nonexistiant. Last I heard he was looking for the new site he had on CD but couldn't find it. He thinks he lost it in a basement flood with his Ti-85.

The Slayers Engine and the Engine that Slayers the Roleplaying game and BGC used are two completely different things. It's confusing because at the time when The Slayers Engine was proposed, there was going to be a joint Slayers game but we decided to use the Engine for FF7DE and Hiryu made a Slayers game with a completely different engine. A lot of the reason for this is because of the Dev time the Slayers engine was taking, and to run the True fighting spec for the Slayers Game I had invisioned would involve an AI that I'm not too sure could be done on an 89 without taking a ton of time to think up moves. Primarialy, it's named after that fighting spec of the engine, which fought exactly to the letter like the Slayers Anime. In fact, I completely rewatched the First season and revised the spec so that every single event in the anime was either represented, explainable in RPG terms, or could be done in one form on another. If you never watched Slayers, then the closest thing to how Slayers fought that is mainstream is DBZ (and possibly Yu Yu Hakusho), just a lot slower. As far as the Slayers Engine is concerned, It was never put into a game and won't be until Legend of Landel.

I dont know what Hiryu has done with the Engine that he used for Slayers and BGC (we'll call it the BGC engine since I dont remember its real codename). Mystic Legend 89 probably has some BGC engine code in there. I know that it adopted some Slayers Engine like techniques for things like storyline, but it's not the full Engine itself.

usually programmers retired after posting this kind of announcement, but you are still coding

Reguarding the memory question
on the 89 this is done by getConfg[18] and getConfg[20] for Ram and Archeive respectively.  

Hays was a subject of a lot of fun between Me and Hiryu, It basicially became a hobby to bash them and their guestbook, not that they didn't deserve it, they were flat out ripping a ton of programmers off. The NPO vs Hays readme was an absolute joy to write, and one of these days try typing Hays game co in google and see what you get when you feel lucky. I should be a real dick and change game to games in the rant like they did to avoid that problem.

I still believe they knew I was doing the majority of the GOD stuff, I mean NPO VS Hays was an huge clue. There are some posts in the board on my site of them replying to the rant. I find it amusing that it took them 20 minutes to respond to it. Look for "your lame April fool's joke" in the board to see what I mean.