The Halley Project is a 1985 game developed for the Apple II, Commodore 64, Atari 8-bit family, Amiga and possibly other platforms, by Tom Snyder and Omar Khudari and published by Mindscape. It was later ported to the Commodore Amiga with updated graphics.
The Halley Project is distinctive for the accuracy and sense of realism it seeks to convey. The distances between worlds are realistic, their sizes reasonably accurate, and the task of landing safely often less than easy â€” a small window at a certain point in orbit must be reached in a given amount of time. Travel across the vast distances of the solar system is made bearable by one of the game's few fictional elements, a hyperdrive that engages when the speed of the craft reaches 300,000 kilometers per second (the speed of light). Navigation takes place entirely in a flat plane with no "vertical" component, though the direction the ship travels and the direction it faces are each controlled separately. The player is aided by a radar system that pinpoints the planets on a circular display centered on the ship's position, around which are also marked the 12 constellations of the Zodiac. The range of the radar can be zoomed from 50 million kilometers out to 10 billion.