Koronis Rift is a December 1985 computer game from Lucasfilm Games. It was produced and designed by Noah Falstein. Originally developed for the Atari 8-bit family and the Commodore 64, Koronis Rift was ported to the Amstrad CPC, Apple II, MSX, Tandy Color Computer 3, and ZX Spectrum.
In Terror Of The Deep the search of the allegedly living famous Scottish Loch Ness monster aka “Nessie” is accepted. This was enriched with alien monsters that inhabit the lake, since meteorites similar objects have fallen into the area of Loch Ness from the sky. The player’s task is by means of a diving capsule to find the alien crystals and destroy them then to find “Nessie” .