Behind the waterfall is structured a lot like a parser game, except that here, you get to click on conveniently placed hyperlinks to examine/interact with objects and move the story forward. Well, definitely works for me.
The game is pretty short, and with my ultra fast reading speed, I was able to finish this in three minutes or so, even though I tend to struggle a bit with puzzles in general. (Spoiler - click to show)All you need to do is place one item, activate another item, collect a third item and now you have what you need to win. Writing is competent and uses a minimal style, and while there isn't really much of a plot, or even context for the situation you find yourself in, but that's ok for a short puzzle game.
It's good for a short bit of entertainment, but once you get to the winning screen, there is little reason to head for another round.