You may use this footage for any purpose that you would like. I don't require credit, but I would like it. Also, yes I played through the entire game again.
Rascal is a fascinating game to me, and there's a lot of misinformation about it. For instance, it was released in 1998 although YouTube gaming says it's released in 1999. A gamespot review says that there are six worlds (there are five worlds), and so many other weird things floating about.
I may do a review on this game at some point in the future.