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Trinity - DOS


Game is con­trol­led by the same keys that are used to playing un­der MS DOS. For full­screen press 'Right Alt' + 'En­ter'.


If the game e­mu­la­ti­on spe­ed is low, you can try to in­cre­a­se it by re­lo­a­ding this pa­ge with­out a­ds or cho­o­se a­no­ther e­mu­la­tor from this table.

Other platforms:

Unfortunately, this game is cur­rent­ly available only in this ver­si­on. Be patient :-)

Game info:
Trinity - box cover
box cover
Game title: Trinity
Platform: MS-DOS
Author (released): Infocom (1986)
Genre: Adventure Mode: Single-player
Design: Brian Moriarty, Jon Palace, Richard Howell, ...
Game manual: manual.pdf

File size:

8789 kB

Game size:

182 kB
Recommended emulator: DOSBox

From Wikipedia, the free encyclopedia:

   Trinity is an interactive fiction video 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 prose poem regarding the destructive power of the atomic bomb and the futile nature of war in the atomic age. The name refers to the Trinity test, the first nuclear explosion, which took place in July 1945. It is Infocom's twentieth game and the last game released by the company when it was solvent.
   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 Gardens, 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 cannot 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 do not 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 Eniwetok 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.
   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, near future (fictional, Omega)
  • Low Earth Orbit, near future (fictional, Mercury)
  • Nevada (underground), 1970 (historical, Pluto)
  • Eniwetok Atoll, Pacific Ocean, 1952 (historical, Neptune)
  • Siberia, 1949 (historical, Libra)
  • Nagasaki, Japan, 1945 (historical, Mars)
  • Trinity, New Mexico, 1945 (historical, Alpha)
   Each of the 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 bombing of Nagasaki was an act of war, and Mars is the Roman god of war. The test in Siberia (actually in the Kazakh Soviet Socialist Republic) 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, making a reference to restoring the balance. The Eniwetok Atoll test took place in the middle of the ocean; hence it is symbolized by Neptune, the Roman god of the sea. The Nevada test is underground, and thus represented by Pluto, god of the underworld. The fictional incident in London was chronologically the latest to take place, and omega is the last letter of the Greek alphabet. The symbols also appear at the corresponding locations in The Illustrated Story of the Atom Bomb comic, which was included with the game. The fictional Low Earth Orbit (Mercury) detonation is very likely a reference to the space interceptor subproject of the Strategic Defense Initiative, nicknamed 'Star Wars', contemporary with the game's development. Trinity also includes numerous references to British children's literature, including the Alice books of Lewis Carroll, the Mary Poppins books of P.L. Travers, and especially J.M. Barrie's novel The Little White Bird.

More details about this game can be found on

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This ver­sion of Trinity was de­sig­ned for per­so­nal com­pu­ters with o­pe­ra­ting sys­tem MS-DOS (Mi­cro­soft Disk O­pe­ra­ting Sys­tem), which was o­pe­ra­ting sys­tem de­ve­lo­ped by Mi­cro­soft in 1981. It was the most wi­de­ly-used o­pe­ra­ting sys­tem in the first half of the 1990s. MS-DOS was sup­plied with most of the IBM com­pu­ters that pur­cha­sed a li­cen­se from Mi­cro­soft. Af­ter 1995, it was pu­s­hed out by a gra­phi­cal­ly mo­re ad­van­ced sys­tem - Win­dows and its de­ve­lop­ment was ce­a­sed in 2000. At the ti­me of its grea­test fa­me, se­ve­ral thou­sand ga­mes de­sig­ned spe­ci­fi­cal­ly for com­pu­ters with this sys­tem we­re cre­a­ted. To­day, its de­ve­lop­ment is no lon­ger con­ti­nue and for e­mu­la­tion the free DOSBox e­mu­la­tor is most of­ten used. Mo­re in­for­ma­ti­on about MS-DOS operating system can be found here.

Available online emulators:

5 different online emulators are available for Trinity. These emulators differ not only in the technology they use to emulate old games, but also in support of various game controllers, multiplayer mode, mobile phone touchscreen, emulation speed, absence or presence of embedded ads and in many other parameters. For maximum gaming enjoyment, it's important to choose the right emulator, because on each PC and in different Internet browsers, the individual emulators behave differently. The basic features of each emulator available for this game Trinity are summarized in the following table:

Emulator Technology Multiplayer Fullscreen Touchscreen Speed JavaScript YES NO NO fast
js-dos JavaScript YES YES NO fast
js-dos 6.22 JavaScript YES YES NO fast
jsDosBox JavaScript YES NO NO slow
jDosBox Java applet YES YES NO fast

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