After the defeat of the dark lord Fact at the tower of Dahm, the great swordsman Adol Christin is whisked away to the island of Ys in the sky, a place that has been controlled by the demons for centuries, keeping its residents living in fear. With new friends to save and greater enemies to defeat, Adol must now fight the evil that seeks to control not only Ys, but the entire world, with the help of the black pearl bestowed by the goddesses so long ago.
The Joker Cluster is a group of 4 solar systems, inhabited by thousands of countries and millions of people. Amongst the kingdoms, men called Headd Liners pilot mecha known as Mortar Headd, which are also manned by fatima, android women who act as the bridge between the machine and its pilot. Ladios Sopp is a young man on his way to an android auction, where he hopes to retrieve a fatima from his past, Lachesis. But retrieving her will be no easy task, and along the way, he will meet new friends and make new enemies before reaching his goal.
In an ancient time of swords and sorcery,the struggle to rule the cursed land of Lodoss rages on, spilling the blood of monsters and men. With the threat of dragons and dark powers hellbent on destroying it, the only hope for Lodoss is a young swordsman named Parn and his comrades. Armed with determinination and sheer strength, the band of friends must join the forces of kings and elves to overcome the dark sorcerer Ashram and his mistress Pirotess, as the ultimate battle of good versus evil begins!
In a mystical land filled with magic and monsters, eager adventurers scour a ten-floor dungeon in search of fame and fortune – if they are able to escape with their lives! But none dare set foot in the tenth floor, as a powerful foe will make sure that they never return to the light of day: the evil Werdna, a wizard who stole an amulet of immense power. Now, to aid a beautiful woman, a group of skilled warriors must descend to the tenth floor to find the woman’s lost love, and to take back the amulet from the hands of evil!
Both anime involve collecting treasure, fighting lots of monsters and bad guys, and saving the day at the end. The animation is very similar to each other as well. If you liked one you'll like the other as well.