Dragon Slayer is an action role-playing game, developed by Nihon Falcom and designed by Yoshio Kiya. It was originally released in 1984 for the NEC PC-88 computer.
It was ported to the Game Boy in Epoch in 1990

Dragon Slayer is regarded as the one of the early precursors of the action RPG genre, In contrast to earlier turn-based roguelikes, Dragon Slayer was a dungeon crawl RPG that was entirely real-time with action-oriented combat.

The game featured an in-game map to help with the dungeon-crawling, required item management due to the inventory being limited to one item at a time, and featured item-based puzzles which later influenced The Legend of Zelda. Dragon Slayer's overhead action-RPG formula was used in many later games, laying the foundations for future action RPG series such as Hydlide, Ys, and The Legend of Zelda.

Dragon Slayer: The Legend of Heroes is a role-playing game developed by the Nihon Falcom. It is the sixth game in the Dragon Slayer line of games, and the first in the The Legend of Heroes series.

This 2D platformer has elements of role-playing and adventure in addition to side-scrolling action.

The story is a classic one of good versus evil. Disaster strikes the once peaceful Elf town of Eolis. The sky rains meteorites upon the World Tree - wild animals and evil monsters terrorize the citizens - the water supply from the wells is dwindling - plants are withering - people are dying. Only you can restore peace to the land by conquering the Evil One, who lives in the Evil Place.

There are many places you must visit during your quest including the medieval town, where you begin, country villages, fortresses, caves, and gloomy bogs - each with its own ambiance and musical score. You will be talking with the villagers, collecting gold to buy weapons, armor and other objects, jumping over obstacles and using items. Attack zombies, dwarves, giant snakes, wyverns, evil gnomes, or one-eyed one-footed things with a large collection of swords and daggers or zap them with a magic spell.

As areas are completed by defeating enemies, your character rises up in "levels" and achieves a new "rank" which is tied directly to the restore password (called a "mantra" in the game). The higher your "rank", the more gold you start out with. Saving a game can only be done in a shrine or temple with a priest. This is also where you are transported when you restart the game - or if you die.

This is an action game with role-playing elements. In it, the player controls user of a family (including two parents, two children and a weird pet) as they delve into a large dungeon. The object of the game is to collect a variety of items and use them to defeat several bosses. Each character has different jumping and fighting abilities and is able to equip different items, so using multiple characters is essential to success. Defeating the final boss, a dragon named Keela, ends the game.