Fire Emblem: Shadow Dragon on hard x5 is the deepest strategy challenge I've had in some time. I'm on level 7 or 8 and am in pretty good shape at the moment, but there are really brutal sections that require plenty of restarts.
really? i personally think Fire Emblem: Shadow Dragon is the worst FE to be released in the states.
It's the best I've played for having such a range of difficulty-levels. The highest difficulty level for SD is genuinely challenging. As much as I like the Game Cube Fire Emblem, the hardest setting is too easy so far. The Wii Fire Emblem is supposed to be quite interesing, so I'm looking forward to going deeper into that one.
It should also be noted that the FE games up to SD were weakened for one reason or another. (I think FEIX's US Hard mode was the same as JP's Normal.) Though the FE games are all over the place in difficulty (from IV's Sety to V's Stamina Bullshit and From II's Angel Ring to X's Dawn Brigade).
If I'm not mistaken, one of the lead developers for CT was Yuji Hori, the lead scenario writer for Dragon Quest and pretty much the series' lifeblood and reason for being.
Which would mean that Chrono Trigger is related to Dragon Quest, at least tangentially.
For proof of this see DQVIII vs. every other straight JRPG by Level 5.