River King (North America) or Harvest Fishing (PAL) (known in Japan as Kawa no Nushi Tsuri (川のぬし釣り lit. "The River's Master of Fishing")), originally released in English as Legend of the River King, is a fishing-themed role playing game series by Natsume (known mostly in America for its farming game series "Harvest Moon") that has releases on over 6 video game systems. Of these, 3 have been released in America, Kawa no Nushi Tsuri 3 and 4, dubbed "Legend of the River King" and "Legend of the River King 2" in the U.S. as well as Kawa no Nushi Tsuri: Wonderful Journey for the PS2 which was renamed River King: A Wonderful Journey. Natsume also plans to release versions for the PlayStation Portable and Nintendo DS.
Source: Wikipedia, "List of River King video games", available under the CC-BY-SA License.