Fadest, the author of YNXA and the upcoming YNXA full version release has just made his game engine available for beta testing. This is a no-code game maker, though there are a still a few hoops to jump through.
Games are limited to puzzle-platformed style games, exactly like YNXA is. Music has to be composed in ABCmusic. There are also limitations on enemy types, number of switches and gems and level composition. Even with those limitations, this looks like a really fun project to get started with Lynx coding.
If you're interested in beta testing, head on over to this AtariAge forum thread and leave a comment - Looking for beta-testers : want to create puzzle-platformer games (like Ynxa) with no code on Lynx ?