Atlus' Shin Megami Tensei: Strange Journey features a password system that lets players summon special demons via secret codes, like the two they've passed on to Kotaku to share with our readers, including one for password-exclusive Alciel, the Black Sun.
The latest Shin Megami Tensei DS game to hit North America features a sophisticated demon password system, which utilizes special codes to unlock powerful demons to join you on your Strange Journey. I suppose you could consider these codes free downloadable content that's already on the disc, though there's no disc, and technically no real download either.
Here's the official Atlus description of the two special demons, followed by the passwords needed to unlock them. The passwords are case sensitive, so be sure not to have any cases laying about when you enter them.
The base version of the Queen of the Faeries, Titania, has some powerful skills including Maziodyne and Mediarahan. But if you want something a little different, you might try out this special Titania, who trades what she has in multi-target damage and healing for more overall versatility: with Agidyne, Bufudyne, and Ziodyne, she can exploit three times the weaknesses, and if you're frowning at the lack of party-wide damage, well, is Megidolaon good enough for you? Call on this level 60 Neutral-Neutral demon with:
If you've got a Law party cooking and want a physical powerhouse, then Alciel, the Black Sun, may fit the bill. Another password-only demon, Alciel has some drawbacks-he's weak to physical and gun attacks, and you won't want to put him up against any Expel-users-but he has stamina and HP enough to survive the hits and the Counter skill to dish them right back. And that's when he's on the receiving end of damage; when he's dishing it out, his Hades Blast does heavy physical damage to the entire enemy party. Summon this level 61 Dark-Law demon with: