The fourth of the five SMS Alex Kidd games, Alex Kidd: High-Tech World is in fact a conversion of Anmitsu Hime, a japanese game released two years earlier. (The box text says it's the third because BMX Trial was not released outside Japan.)

Get ready to join the Kidd in his third great Sega adventure! Being the Crown Prince of Planet Aries is never easy. On top of being a galactic hero, you have to deal with parents, teachers and palace retainers! But you're a Kidd at heart, and you just have to go to the new High-Tech World video arcade to play the newest Sega games!

The problem is, the map to the arcade has been torn up into eight pieces and hidden in the castle. As you look for the pieces you'll discover just how weird life in a castle can be! If you find them, you'll have to fight your way through a forest filled with blue Ninjas. Survive this ordeal and you'll have to find a travel pass in the village to make it over the border!

It's a game of wits, intrigue, action and excitement. There's even a PASSWORD so you can save games. Survive all the obstacles and you'll play in the hottest arcade in the land. But if you don't hert there before the 5:00 closing time, you'll be left out in the cold! Better hurry!

Alex's worst outing ever. The main problem with this is the presence of a very harsh restart procedure which always places you back at the beginning when you die. Argghhh!

Many centuries ago, on the planet Aries, there lived a boy called Alex Kidd. For seven years, he lived on Mt. Eternal studying Shellcore, an ancient art that makes one strong enough to break rocks into pieces. As he was leaving the mountain one day to travel to his spiritual homeland, a dying man told him that the peaceful city of Radactian was in grave danger. Before taking his last breath, the man gave Alex a piece of a map and a medallion made of Sun Stone.

There are eleven locations in which Alex must explore, each of them has its own unique dangers. In each location, Alex can collect bags of coins, which can be used to buy items at the shop and are used to help Alex get through each location (eg: motorcycle, peticopter, power bracelet, etc.) There are also traps that Alex must avoid like the ghost that chases him. He can also collect the Telepathy Ball that will help him read people's minds.

Later, Alex learns that in order to save Radactian from destruction, he must first defeat Janken the Great, Emperor of the planet Janbarik (he got his name from his expertise at the game of Janken -- or what people call "scissors, paper, stone" in the Western World. Janken has sent his henceman all over Radactian to prepare the game for Alex as he passes by them. In order to get past them, Alex must win three times at Janken. If he loses, he is turned to stone and vanished from Radactian forever. Later on in the game, Alex must play with the same henceman, but only this time, when Alex wins, they decide to play dirty.

Alex uses his fists to wipe out some of Janken's enemies such as birds, sea horses, bats, monkeys, frogs, and a few others. If his quest to save Radactian from the evil hands of Janken becomes difficult, he can instead use the power bracelet to perform the "Shocking Waves of Destruction", an ancient trick in the art of Shellcore.

Before Alex comes face-to-face with Janken, he should rescue his brother, Egle, from imprisonment, and get the letter and two medallions.

This is undoubtedly his most successful attempt. It was designed in competition to Mario and uses many of the same popular and successful elements.

After ten thousand years, the once-banished Dark Ninja returns to make another attempt to take over the Miracle World. Someone's definitely got to stop him! Guess who dares to meet the challenge? You! You're Alex Kidd, the prince who knows no fear.

A lovely girl has been kidnapped and her life is at risk! And she's your girlfriend from the planet Shinobi! By holding her hostage, the Dark Ninja plans to realize his fiendish scheme. She must be saved before it's too late!

You need more than courage to be successful. Transform into a fireball and burn up enemies that come at you. Jump up and across towering walls with your amazing wall-climbing skills. Turn into a tornado and twist your way out. And when you encounter the Dark Ninja, think only of winning. Otherwise you'll lose your girl and, worse yet, the Miracle World will be doomed forever!

Mixing ninja with a successful character. There's plenty of platform adventuring to keep you enthralled for ages.

Alex Kidd is the brother of King Igul, ruler of Planet Aries. Acting on a rumored sighting of their missing father, Alex travels to the planet Paperock to find him. Why the name? Because the child's sport of Paper-Rock-Scissors is a planet wide institution, and those who visit must display some talent in the game. The only MegaDrive entry in the long-running and popular series of arcade and console games by Sega.

Not very challenging, but not bad for a game made back in 1987.

Alex Kidd is a platform arcade game released by Sega in 1986.

Plot:
Alex Kidd and Stella searching for the twelve Zodiac signs.

The Kidd is back! It's Alex, the little Prince with big ears and unlimited courage. When danger threatens the Miracle World of Aries, Alex Kidd is there to meet any challenge.

This time, the evil Jigaratt has stolen the stars from the Aries constellation. The skies above the city of Radactian are now cold and dark. Only someone of royal blood can get them back... and that's the Kidd!

Join Alex in fourteen rounds of adventure to worlds where anything is possible! You have legs that jump like steel springs and magical cloud shots to stop the enemy. But the key to getting the stars back is strategy. Are you good enough to beat Jiggarat?

Usually Alex Kidd provides you with a testing challenge that will last for months on end. Not this one, though!