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Dirty Harry is based on the popular Clint Eastwood movie character of "Dirty" Harry Callahan (rather than the specific movie "Dirty Harry"), a cop famous for his use of a .44 magnum for doing away with evildoers, and for his catchphrase, "Go ahead, make my day." In fact, the game begins with a digitized sample of that quote. The game play consists primarily of side-scrolling action. Dirty Harry can punch and kick the copious thugs that assault him using their own fists, guns, baseball bats, nets, and dynamite. The hero can also pull is .44 and aim it in 5 directions in order to pick off enemies, but the ammo is limited. Further, Dirty Harry has a number of other tools at his disposal, provided he collects them.

Battle Unit Zeoth takes place in the future where mankind is invaded by a race of alien robots known as the Grein. The Earth’s forces were triumphant in battle and the Grein forces fled the Solar System. However, as they retreated, the Grein left behind a secret underground base filled with self-replicating Grein machines. Forty-two years after the Earth’s victory, the Grein base opened and a new attack force decimated the city of New Age. To retaliate, Earth’s military has stored a mecha that specializes in alien combat known as the Zeoth. It is the Zeoth’s assignment to stop the attack force, go into the Grein secret base and destroy the mechanical occupants before a new invasion force arrives.

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The player controls a driver of an excavation vehicle as he competes in a 48-level tournament of drilling things. Players have to kill rival drivers only by pushing huge stones at them. Most of the other stones are a permanent part of the underground cavern; while others can be used to eliminate the opponents. Money is earned after each level for the purpose of upgrading the player's vehicle. Players can improve their engines, purchase extra lives, shovels that can dig better, and weapons to improve the odds on the playing field. A kill ratio is required to be met in order to reach the next stage. Otherwise, the player remains in the current level. After finishing all 48 levels, the game proclaims that the "battle is over" and that the player becomes "the new champion." The final scene in the game is where the player looks over the sunset with his girlfriend along with the closing credits.

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Astro Rabby is an action video game developed by Cyclone System and published by Information Global Service (IGS) for the original Game Boy exclusively in Japan on October 12, 1990. It is the first Game Boy title to be published by that company. The game puts you in control a of Rabby, a robotic bunny, who's goal is to recover stolen parts for his creator, Doc, that were taken by the Dortoise Troops. Doc's dream is to utilize the parts to allow Rabby to fly freely. The game is a top-down, vertically scrolling action game that can be considered a precursor to the Jumping Flash series. The player must jump along platforms in search of a heart, which will allow the player to upgrade Rabby and proceed on to the next level. A level will loop indefinitely until the heart is found.

Ayakashi no Shiro is a Role-Playing game, published by Seta Corporation, which was released in Japan in 1990. Ayakashi no Shiro is a turn-based dungeon crawl. Players move the protagonist through first-person dungeons where randomly occurring battles happen. When combat begins, the player is given several options through a menu system to fight the enemies.

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Long ago, the continent of Archanea was invaded by the Dolhr Empire, led by the Shadow Dragon Medeus. Anri, a youth from Altea, defeated the Shadow Dragon using the divine sword Falchion. The Kingdom of Archanea was restored and the world entered an era of peace. However, 100 years later, Medeus is resurrected by the evil wizard Gharnef, who has conquered the mage-state of Khadein. The two form an alliance with the kingdoms of Macedon and Grust in order to conquer the world. Cornelius, the king of Altea and successor of Anri, takes up Falchion and leaves to battle them, leaving his son Marth and daughter Elice in the care of a bastion manned by Altea's ally, Gra. However, Gra betrays Altea to Dolhr; Cornelius is killed, Falchion is stolen, and Elice sacrifices herself so Marth can escape. Accompanied by a handful of knights, he takes refuge in the island nation of Talys. Several years later, Marth repels a pirate invasion of Talys, leading its king to conclude that he is ready to battle Dolhr; he sends Marth out with several of his most trusted men and his daughter, Princess Caeda. Marth first rescues the kingdom of Aurelis and enlists the aid of its king's younger brother, Duke Hardin and his retainers. He meets Princess Nyna, the last survivor of the Archanean royal family and leader of the resistance against Dohlr. She gives him the Fire Emblem, a legendary treasure given to the hero destined to save the world. The two march to Archanea and free it from Grust's grasp. After briefly invading Khadein in search of Falchion, Marth retakes Altea. He learns that his mother was killed in the invasion and that Gharnef is holding Elice prisoner. Marth next battles Grust and their top general, Camus, who rescued Nyna from execution at Dohlrian hands; he chooses to uphold his honor as a knight of Grust, and Marth is forced to defeat him. Marth is contacted by Gotoh, a wise old sage, who informs him that Gharnef wields the tome Imhullu, making him invincible; the only thing capable of defeating him is the magic of Starlight. Gotoh sends Marth to the Fane of Raman to find the materials needed to create Starlight; he also rescues the divine dragon, Tiki. Marth then invades Macedon and deposes the tyrannical King Michalis with the aid of Michalis' sister Minerva. There, Gotoh reforges Starlight. Marth invades Khadein once more, defeats Gharnef, reclaims Falchion, and rescues Elice. He then makes his way to Dohlr, battles, and defeats Medeus, returning peace to the land. If Caeda has survived the events of the game, she and Marth declare their love for one another.

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Players must control a combat robot as they make their way towards their ultimate goal: destroying the enemy orb. Each level only has one screen to blast hostile robots, solve challenging platforms, and manipulate a series of short puzzles. 30 stages await players as they look forward to a boss battle on every tenth stage. A weapon is available; its gunfire can be altered by changing the angle of the gun. Even the distance of the shot can be changed by holding down the button for extended periods of time.

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Moon Ranger is an Action game, developed by Odyssey Software Inc. and published by Bunch Games, Inc., which was released in 1990.

Dawn Raider is a vertically scrolling shoot 'em up made by Taiwanese developer Softstar Entertainment that was released for DOS in 1990.

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Castle of Deceit is a sidescrolling game for the NES where the player takes control of a wizard trapped in the titular castle with only one spell to defend himself. The game was often considered frustrating for its length and lack of a save or password system. Phfax, a mystic being and wielder of the Emerald Magic, consented to offer his life to protect the stones of Rune. For centuries he dwelled within the plasma of energies of the stones where the Runes were hidden. Until at last it drove him insane. Such was the power of the stone that even the bitter hallucinations of his madness were given life. Six deadly beings appeared stealing the Rune Stones. You, Cebo, the most promising of the young Magicians of Dace, must enter the castle, exploring the realities. But do not trust your senses - what you see, what you hear may all be a lie!

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A polygonal tennis game released in 1990.

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The adventure continues as Peacock faces the incarnation of general Nobunaga Oda. Team up with Asura, a fiery spirit, Jukindo master Onimaru, and Zen master Kou Kaifou to fight Nobunaga's missionary minions with a vast array of Shingon spells! Travel to the mystic world of the Lotus mandala and defeat Hindu demons, dark boddhisattvas, and the shadowiest villain yet, the Phoenix!

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The premise of SD-Snatcher is exactly the same as the original. The game takes place in the year 2042, 50 years after a disaster at Chernoton Laboratory released a deadly agent into the air that killed 80 percent of the Eurasian population. You're Gilian Seed, who was discovered in Siberia while in artificial sleep. Gilian wakes up with no memories. He wants to know more about his past, but the only clue he has to go on is a word that sounds eerily familiar: Snatcher.

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