I liked it better when people could just make a simple agreement and that's the end of it.
I'm picking up what you're putting down, If your game is free then I don't really see the issue about using my stuff, but if i ever see you monetize that stuff that's clearly mine then I'm gonna need that fair share of cash. I don't really know how the whole Youtube site works, you just post stuff and earn money from ads? Don't really know, but I guess it is how it is. I can clearly see that part, you seem very passionate about your projects.
If I had to give my honest criticism about the games, the only thing lacking is: the visuals and the animations,
for example: mount fear doesn't really have any fog or snow falling effect which just makes it looks, a bit flat, the texture on the mountain repeats which looks a bit off, the snow doesn't deform when you walk.
But I have to say they heavily reminds me of those old 3D flash games graphics, and if that's what you're going for then you nailed it.
I have tried game developing and if it had to teach me one thing, it's that I talk a lot about what I want to do for the game and then immediately getting off the studio after one mechanic is finished, If you don't want to bother with stuff like shaders and smoothing out the animation I completely get it.
that is all I can think of, the rest of the games is good but the most important thing is the games are playable and quite enjoyable and I think this is what truly matters the most.