Megami Tensei Gaiden begins the Last Bible series of Megami Tensei games. Although they look and play like Dragon Warrior titles and have a typical-RPG medievel setting, the series maintains the ability to converse with monsters, add them to your party, and fuse them. The storylines also deal with the demon realm, as you'll run into the usual slew of demons that should be familiar to fans to the main series.

The first game puts you in the shoes of a young man, who initially sets off to train his Gaia powers but ends up getting sucked into something much larger. Given that it is a portable game, it's somewhat simplified (and much easier) compared to the other MegaTen games, but it still maintains the basics of the series. While the graphics are nothing to write home about, some of the music is oddly catchy. While not an outstanding game by any means, but it's one of the few competant RPGs for the Game Boy.

Initially released for the Game Boy in 1992, it was rereleased in 1999 for the Game Boy Color. This version was translated into English by Atlus and released as Revelations: The Demon Slayer, making it the second Megami Tensei game to make it to America. Sega also released their own port of Last Bible to the Game Gear. The graphics are far, FAR better than the Game Boy Color version, with some impressive cinema scenes (when you name your heros in the beginning, a glowing hand touches the forehead of each of the characters.) Very nice for a portable game.

Not much has changed in the sequel - other than some minor improvements to the graphics (mostly the in-battle characters), the gameplay in Last Bible II is pretty much the same. This time you play as a young boy named Yuri, who was raised amongst monsters. What he doesn't know is that he is actually born of the demon kingdom, and his birth signifies the return of a great evil. Once again, it's your typical RPG, although there is no translation available. Much like the original, Last Bible II was re-released for the Game Boy Color with a similarly awful looking color palette.

Last Bible finally grew up and hit the Super Famicom in 1995. The intro begins with a man named Alek, stranded in a snowy wasteland. As he wanders forward blindly, convinced of his death, he stumbles upon the entrance to the demon world. As he collapses, he remembers his friend Glenn, and the news of a child. You play that child, a blue haired fellow named Ciel. He begins his quest leaving his hometown, adventuring towards a place called Megaro Polis, but eventually gets caught up in something greater, per usual RPG standards.

The graphics are colorful, with Final Fantasy VI-style sprites. The battle system is pretty much the same as the Game Boy games, although some of the monster designs are freaking weird (check out the happy blue bird, which I swear I've seen in some Disney movie, or that bizarre green leopard with the head of an old man.) Extremely useful this time around is a gauge that lets you see how your answers are affecting a monster, so it's easier to see whether you're pissing them off or not. Overall, it's definitely the best of the Last Bible games.