Fans of the niche-genre of tactics-style RPGs usually have a short list of favorites. Typically, at the top of this list is either Final Fantasy Tactics or Tactics Ogre, depending on which game they discovered first. Both games were developed by Quest, just before Square bought them out and absorbed their development team into their own. Quest is the developer that gave the modern Tactics-style RPG its defining characteristics and identity.

Second or third on the list for most fans of this subgenre is Atlus/NIS America’s Disgaea, one of the companies’ early PS2 offerings. Those who felt Final Fantasy Tactics offered mad depth were blown away by the depth and complexity of Disgaea; some have even compared it’s battle system strategies to algebraic formulas, although I believe that’s taking the hype a bit far, and tends to scare off newcomers to the title.

Now, there’s a chance to reintroduce a whole new generation to the delights of Disgaea while still pleasing fans of the original with Disgaea: Afternoon of Darkness for PSP. Not only is the entire original game intact for the port-down to PSP, but a complete alternate-reality adventure becomes available after you complete the game, lasting nearly as long as the 100-hour-plus original title.

In the original game, you play through as Demon Prince Laharl, who is awakened from a long nap several years after his father has died and left the throne of the kingdom of the Netherworld vacant. He is accompanied by the scheming Etna and, ultimately, the angelic assassin, Flonne, in his quest to retake his father’s throne.

The alternate reality mode allows you to experience the game if “what if,” mode, a fully developed alternate storyline in which, instead of waking Laharl up, Etna kills Laharl in his sleep and makes her own bid for the throne, redecorating the castle with all-new executive office furniture. (OK, not really.) In addition to adding value to the already long and addictive game for newcomers, this new story mode is what will make veterans of the PS2 classic willing to replay the game again on PSP. It’s definitely worth the journey.

One of the appeals of Disgaea is its incredible depth. There are many ways to progress through the game, many items to buy, many jobs to take on. There is the Dark Assembly, which can be used for everything from rising in rank to petitioning for more powerful items and additional funds. There is the item world, where you can do battle to win upgrades to your items, which level up. And there are the main mission battles, which are plentiful and can often be fought and refought multiple times to level up your party. In fact, the game is so deep, it may be necessary to have the second story mode just to explore it all completely.

The battle system will be immediately familiar to anyone who’s played other Tactics-style RPGs, and has plenty of depth to it as well, since characters gain new abilities as they progress in level. And since the game is filled with great anime-style art, fun voice-acting and an undeniable sense of energy, there’s simply every reason for both Disgaea veterans and newcomers to pick this title up; the second Disgaea title was released on PS2 back in 2006, and word on the street has it that a third Disgaea title is already in development for PlayStation 3, although it is said that the series will retain its throwback visuals even on the new, more powerful platform.

No matter what it is a person enjoys about Tactics-style RPGs, there’s plenty to love in Disgaea: Afternoon of Darkness for the PSP. Heck, there’s even a multiplayer mode to further extend the replay appeal, available via Ad-Hoc mode via WiFi. Disgaea: Afternoon of Darkness definitely extends Sony’s recent run of quality titles for PSP, ever since the PSP Slim relaunch.