MazeRats is the expanded edition of Knave written by Ben Milton, I believe. So it’s more like a second edition.
Other way around but also not quite.
Mazerats is very focused. I hate to use the word "rules light" because of the connotations, but the rules are 6 pages and 2 of those are the random spell list so there is no room for grapple tables. There are 3 classes and slight level progression. It is my go-to when possible to get people into the OSR mindset because by the time they are starting to chew at the bars of Mazerats' limitations, they are usually ready for B/X.
Knave is more of a B/X evolution, and from the same mind but a entirely different goal.
Not to be too degenerate, but I do wonder if there is an untapped market for adult content in games. Not ERP necessarily, but things like Gorgeworld that tap into a specific fetish.
Yes but no. the primary issue with fetish games is you have to sit in the same room with people who have your disturbing fetish and it gets you thinking "Wait, these people are fat obnoxious losers. Is that me? Is that my fate?"
Add to this the Jailhouse Gay issues of the usual nerd herd. No even partly attractive girl is going to sit down to do math for 4 hours to try to get fetished by a 3:1 neckbeard ratio unless she's being paid. And if she is into that, she can just go to the bar, find those neckbeards and get free drinks in the balance.
Gorgeworld works because its furries. They are already terminal losers, hide their disgusting bodies behind fursuits, and have completely accept the only way they're getting laid is leaning into manlove.
tl:dr: What the fuck do you think V:tM LARP is? Its the tap for that market.