Koishi’s Fishing Journal

Desktop idle fishing

Koishi’s Fishing Journal is a PC idle fishing game and Touhou Project fan game starring Koishi Komeiji. She fishes in a corner of your desktop while you work, study, or do other things, and keeps going when you aren’t watching. Check back to see what she’s caught, then let her return to fishing.

Fish and merfolk

The water contains ordinary fish and rarer merfolk, including mermaids, the rarest and highest-tier species. You can fill out a collection of the different species and seek out the rarest ones. Catches also supply ingredients: ordinary fish can be used for cooking, while merfolk provide precious ingredients that ordinary fish can’t.