Radiant Historia is a fun, time-traveling RPG, can get repetitive, but has a unique combat system and great visuals.
The two unique tid bits in this JRPG are the combat and the way the adventure unfolds.
Combat -- RH uses standard magic+skills+weapons turn-based combat. However, combat occurs with enemies on a 3x3 grid, and your use of skills to knock enemies about that grid drastically affects the outcome of the battles. Enemies that are closer to you do more damage, so you need to use skills to knock enemies further from you. Also, you can momentarily knock enemies into the same grid space, and others in your party that strike before the enemy will hit both enemies if they're in the same grid spot. It's a cool wrinkle on standard turn-based play, and works well.
Story -- Your character possesses a book that allows him to travel through time, interacting with two strange omniscient children. You are presented with many moments in the game where you must make an overt choice, such as where to intercept an enemy, deciding to take the time to save someone versus taking the enemy on instead, etc. Some of these choices can cause your entire empire to fail in the war. The game informs you that the negative outcome is avoidable, and at that point to must choose a point in the game timeline where you made a choice previously, and reverse your choice, then hope the story unfolds more positively. It's a cool way to deal with time travel, but can force you to replay anywhere from 5 to 20 minutes of gameplay that you've already done, which is OK, but can be tedious. You can speed through the dialog with the X button, and things like purchases of equipment and upgrades/leveling up are kept even when you time travel.Bbut battles with wandering enemies, walking from area to area, etc. must be repeated. Whether that's annoying or not depends on your mood...
The good:
+ Great steam-punkish visual style shown via traditional 2d-pretending-to-be-3d sprite graphics. Characters are very small (a-la GBA), but everything still looks very good.
+ Limited, but very good musical tracks throughout
+ Story is generally good, depending on your patience with replaying some segments due to the time traveling bits.
+ Fun combat system
+ Decent characters, if not a little generic, but enough to keep you interested
The not-so-good:
+ Time travel mechanic can be tiresome
+ A few sections of the story were a little bland, where you'll do a lot of walking and not encounter many unique enemies.
Overall, though, if you enjoy a good JRPG, this is a far more interesting choice than another N64 remake.