Odell Lake is a 1986 educational life simulation game produced by MECC for the Apple II and Commodore 64. The player is a fish living in Odell Lake, a real-world lake in Oregon.  It is based on a 1980 BASIC program of the same name. It was followed-up by Odell Down Under.

Gameplay
As a fish, the player could "go exploring" or "play for points". The object was to decide which fish to eat, while trying to survive and avoid other enemies; such as otters, ospreys, and bait from fishermen. When simply exploring, the player could select from six different species of fish, such as Mackinaw Trout, Whitefish, or Rainbow Trout; however, when playing for points, the computer randomly assigned the type of fish that the player will play as. In addition, the titles for each of the types of fish and other creatures are removed when playing for points, forcing the player to rely on memory; also the game was timed. After every five moves, the player played as a different type of fish.

When playing for points, the best decision netted the player the most points, with less intelligent decisions earning the player fewer or no points, or in the case of the fish eating something disagreeable, actually taking them away. If no decision was made when time ran out, it counted as "Ignore". If at any time the player's fish was attacked by an enemy, or the player got caught by an angler, the game ended immediately.

In Israel the game was published in Hebrew in 1987 for Apple II.

Main fish
The species of fish found in Odell Lake included the following:
Rainbow trout 
Dolly Varden trout
Mackinaw trout, the largest fish in the game
Blueback salmon
Whitefish
Chub, the smallest fish in the game

The game is heavily random; the same situation played in the same way can have different outcomes. For the most points, players must play the game safely, choosing the action that has the greatest chance of leading to a positive outcome. It's helpful to remember the typical locations of food and predators (shallow or deep), and not every situation will have the same outcome.

Other species
In addition to the other species of fish, the player's fish could come across the following in or above the lake:
Otters, who would eat any fish not making a deep escape (except the Mackinaw Trout, because it can only swim in deep water)
Ospreys, who would grab any fish not making a deep escape (except the Mackinaw Trout, because it can only swim in deep water)
Algae (only a good food to the Chub; any other fish would find it disgusting if eaten)
Plankton
Fishermen, whose presence would not be known unless the player ate a baited Chub or a fisherman's fly concealed as Insects and Larva
Bottom organisms
Insects and larva

Actions
The actions a fish could take when he approached (or was approached by) another fish, animal, or object included:
Attempting to eat the item
Attempting to chase away the item
Ignoring the item (by default when the player ran out of time in "Play for points")
Making a "shallow escape" (heading for high water)
Making a "deep escape" (heading for low water)

References

External links

Odell Lake at Gamebase 64

Life simulation games
Biological simulation video games
Apple II games
Commodore 64 games
Video games developed in the United States
Video games set in Oregon
Single-player video games
The Learning Company games
1986 video games
Video games with underwater settings