Short answers, pulled from the story.
Victor Musical Industries released the Star Wars 1991 video game for the Family Computer in Japan on the 15th of November 1991. JVC Musical Industries brought it to North America later that same month of November 1991.
The original title launched on the Nintendo Entertainment System in 1991 while NMS Software developed a Game Boy port published by Capcom shortly less than a year after the initial release. Tiertex created both the Game Gear and Master System versions which appeared in 1993 with U.S. Gold handling distribution for the Sega handheld version.
Players control Luke Skywalker as he pilots a landspeeder around Tatooine to collect R2-D2 from the Sandcrawler and Obi-Wan Kenobi from a cave. Han Solo waits inside the Mos Eisley bar for rescue while stormtroopers patrol the area before the player navigates the Millennium Falcon through an asteroid field.
Victor Lucas gave the Game Gear version a score of 7 out of 10 in The Electric Playground magazine while Power Unlimited awarded the Game Boy version 65% due to complicated graphics and dark images. The Game Gear version became a runner-up for GamePros 1993 Hand-Held Game of the Year award despite criticism regarding controls that lacked precision.
Chewbacca appears at the end of the Game Boy version specifically while Darth Vader makes his only appearance on the Game Over screen throughout all versions. This console lacks the Tatooine hub world found elsewhere yet features exclusive levels including one where Leia delivers stolen plans to R2-D2.