Startropics is probably one Nintendo franchise that you have never heard of

I don't know of many games that have you soaking the manual (or at least an included letter found in it) in water to continue on in the game, but out of all of them that I know of (which is only one, incidentally), Startropics is the best. Nintendo doesn't release many games like Startropics any more nowadays. Puzzles, fun story, interesting characters...Startropics has it all. When the game was re-released on the Virtual Console, I jumped all over it because there really hasn't been an experience like it from Nintendo since.