Jeanne d'Arc for PSP - it was quite an enjoyable SRPG that managed to surprised
me multiple times. The story itself was pretty basic, I mean, it told an anime'd version of the tale of Jeanne d'Arc (duh), but it actually went darker than I thought it would. I've been on a SRPG kick lately, with the game I'd finished before Jeanne being Fire Emblem: Awakening (which also surprised me with a rather dark story element), and now I'm playing Tactics, much to Force's delight.
Fire Emblem was pretty easy, although I'm pretty sure I played it on Easy due to wanting to get through it as I have a rather extensive backlog right now. Jeanne definitely proved to be harder. There were multiple times that I would spend 45 minutes on a battle only to lose it at the end, which was frustrating, but encouraged me to develop new strategies and try again the next night. There aren't a ton of guides for the game online, and the ones that I did find were quite vague, so it made it extremely satisfying when I was able to finally figure out the right combo of skills to equip in order to beat a battle that had taken me three to four times to win. I'm not far enough into Tactics to really say how it compares on the difficulty scale, but I'm looking forward to finding out.