Ket Trilogy Part 1, The - The Mountains Of Ket (198x)(-) ROM Download for Acorn Electron (). Ket Trilogy Part 1, The - The Mountains Of Ket (198x)(-) game is available to play online and download only on Late Games. Ket Trilogy Part 1, The - The Mountains Of Ket (198x)(-) ROM for Acorn Electron download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.