Trinity is an interactive fiction computer game written by Brian Moriarty and published in 1986 by Infocom. It is widely regarded as one of the company's best works. The plot blends historical and fantastic elements as part of a tone poem regarding the destructive power of the atomic bomb and the futile nature of war in the atomic age.

Plot

As the game begins, the player's character is spending a final day of a London vacation in the Kensington Gardens. The evening flight back to the United States is looking increasingly unlikely for a number of unusual reasons. Hordes of nannies are blocking all exits from the Garden, and the grass actively resists efforts to be walked upon. Worst of all, a gleam on the horizon soon heralds the unwelcome arrival of a Soviet nuclear missile. Time begins to slow as the missile approaches, and with some ingenuity the player's character finds an incongruous door hovering in mid-air. There's no telling where it may lead, but it can't possibly be worse than the alternative of being at ground zero of a nuclear detonation...

The doorway leads to a strange land, where impossible objects exist. Space and time don't seem to behave in the familiar ways here. Exploring this new environment, the player finds several other mysterious doors, each of which leads to another chapter in the history of nuclear weaponry. After visiting test sites (including ones in Siberia, Nevada, and the Bikini Atoll) and Nagasaki just before each device is detonated, the player has one scenario left to deal with. The final door leads to the New Mexico desert on July 16, 1945, mere minutes before the test-firing that will change the course of history. But something is wrong at the "Trinity" site, and without the player's intervention things will go horribly awry.

Feelies

The packaging for Trinity contained several items, called feelies, related to the plot of the game. These feelies included:

• A map of the Trinity site
• A cardboard sundial marked with odd symbols
• The Illustrated Story of the Atom Bomb, an "educational" comic book laden with ironic statements regarding the feelings of patriotism, idealism, and jingoism surrounding the production of atomic weaponry
• Instructions on how to fold an origami crane

Notes

Trinity was given a difficulty rating of "Standard".

The player is witness to, or rather narrowly escapes being a witness to, a number of nuclear explosions in the game. The sites visited, and the markings on the sundial that represent them, are:

• London, 1985 (fictional, Omega)
• Low Earth Orbit, 1985 (fictional, Mercury)
• Nevada (underground), 1974 (historical, Pluto)
• Bikini Island, Pacific Ocean, 1950 (historical, Neptune)
• Siberia, 1949 (historical, Libra)
• Nagasaki, Japan, 1945 (historical, Mars)
• Trinity, New Mexico, 1945 (historical, Alpha)

Each symbols has a meaning relevant to the incident it represents. Trinity was the site of the first explosion, and is therefore represented by an alpha, which is the first character of the Greek alphabet. The test in Siberia was an example of another superpower attempting to establish balance in the nuclear arms race, and the zodiacal sign of Libra is represented by the scales. The bombing of Nagasaski was an act of war, and Mars is the Greek god of war. The fictional incident in London was chronologically the latest to take place, and omega is the last letter of the Greek alphabet.

External links

• Mobygames' entry on Trinity
• Trinity information and overview
• Scans of the game package, manual, and feelies
• Entry for Trinity on Home of the Underdogs