I was thinking that the first installment would look pretty dated. It's really anything but! While it doesn't look as good as some of the future installments, it's a great place to start out. It really got annoying when the lights went out. I couldn't even tell if that was a mistake or not. With all the sequels, it's weird to have such a generic title.
It's interesting to see how you can figure this game out. I was amazed at how high this guy could jump. It's mobility like that which makes a character good. Really, everyone uses Madness like stuff nowadays. You basically launched your own genre.