In this game with only 4 or so locations, you have a variety of fishing equipment and have to try to catch a giant old fish called the Old One.
You have a variety of options for bait and weights and so on. The actual puzzle, though, is solved by lateral thinking.
It's interesting seeing this and other games from the very first IFComp. It seems like there was more originality and experimentation in the first competition than in the others, where originality was often localized in a few entries.
Somewhat unfair. Recommended for fishing fans.