Alex Kidd: High Tech World is a side-scrolling platform video game for the Sega Master System, and part of the Alex Kidd series. It is a modified version of the Japanese Master System game Anmitsu Hime: From Amakara Castle, which was based on a Japanese television series called Anmitsu Hime.
Alterations made to the English version included altered sprites, English text and a different storyline. Because the game wasn't conceived as an Alex Kidd game in Japan, these alterations caused inconsistencies for the Alex Kidd storyline in The West, such as an appearance of Alex's father in the very beginning of the game, even though his father was missing in Alex Kidd in Miracle World, until being found at the end of Alex Kidd in the Enchanted Castle. Furthermore, while a large variety of characters exist in the game, none of the previously established characters in the Alex Kidd universe are anywhere to be found, nor do any of the characters in this game appear in any of the others in the series.
Alex also has a brother by the name of James in High-Tech World whom is never mentioned in any other games in the series. (Though it possibly could be his brother from Miracle World, Igul incorrectly named.)
Alex Kidd is contacted by one of his friends, who tells him a new arcade has opened in town. Alex has a map to its location, but it has been torn into eight pieces, and is needed to find the arcade before it closes at 5:00 sharp. He solves puzzles, answers questions, runs errands and does housework to find the pieces. After that, he must find another way to leave the house, as the front gate is shut. When Alex finds the map and leaves his house, ninjas appear, who attempt to kill him.