Sigma Harmonics (シグマ ハーモニクス), released 8/21/2008, developed by Think Garage and published by Square-Enix

I came up with “DS game” as a random choice so I chose this based on several recommendations from people in the comments. Because it relies so much on the stylus I had to play it on a real DS, so I’m just going to have to pull random screenshots from the Internet (mostly IGN and Famitsu, you can see in the watermarks)
The game’s selling point is that it’s a blend of adventure-murder mystery, and RPG style gameplay. You find clues and solve several mysteries, while also fighting RPG battles along the way.
The two main characters are Sigma and Neon, high school students who are in families that traditionally have certain powers and responsibilities to deal with demons in the alternate universe version of Tokyo that the game takes place in. Sigma can do some time travel and use music to influence the world, while Neon uses cards and divine possession to fight enemies. The two of them come home one day and find that no one remembers them, and that the Great Clock that had imprisoned the demons has been opened, causing changes to the timeline. The game takes place over six chapters, plus two bonus chapters that can be unlocked if certain conditions are met. Each chapter seems to have a mystery you need to solve.

The adventure part of the game involves going around the Kurogami Mansion and using Sigma’s music ability to find clues to the mystery of that chapter. The first chapter’s mystery takes place 50 years in the past and involves the poisoning death of Ume, the mother of Shizuma who was then head of the Kurogami clan. After seeing the scene where she dies of poison, you then go around and find clues. There are two types of clues to uncover. The first are just hints that will give you small pointers to the solutions. The second are scenes you can watch, that will give you tiles like “Wine” or “Yoshiko was in the kitchen” that will be used later in the solution section. You can also use the Clock to return to earlier times that day to see additional scenes.

Once you have uncovered the necessary clues, you will be able to do “Super Reasoning” where you insert the tiles on a grid to answer questions about the incident. So for chapter 1, the first question is “Was the killer in the dining room?” then if you pick “yes” you are asked “What are two paradoxes in that idea?” Once you put those two in, you are asked “Was the poison in the food?” You pick “yes” and you get asked “Why didn’t anyone else die?” and so on.

You get no immediate feedback on whether your guesses are right or not. Regardless of how right or wrong your ultimate answers are, you will be taken to a final area where you fight a boss. The boss’ power is weaker the better your answers were, and then you get a rating for how well you answered the questions. One of the requirements for unlocking a bonus chapter is to get at least A rank for all the stages.
On the RPG battle side, you fight random encounters as you explore the mansion for the adventures. The battles are done by Neon vs enemies, with Sigma just acting on the sidelines to direct Neon. Neon spins around the battle while the enemies attack with a real time battle system. You have three separate meters that fill up, once one fills up you can use one of the action cards you have in that space. The actions can be attack in a specific direction, attack some enemy, followup attack, heal, All attack, etc. Sigma can also change the battle song to change the speed at which the various meters fill up, and Neon can switch “class” to get different abilities.

Battles give you XP to level up, and you will sometimes get SP that enable to you to get new jobs. The battle system is decent.
My main issue with the game (and why I only played it for the first chapter) is that I don’t think the two systems mesh together well. And I think the reason for that is that they’re almost entirely separate — fighting the battles doesn’t help you investigate the mysteries at all, and almost nothing you do in the investigation part helps you in the fighting part. So it felt like I was constantly being pulled out of the investigation part by these random encounters that didn’t help me. I honestly would have preferred it if they had entirely separated the two — have the investigation by itself, then once you’ve done the “super reasoning,” go to a dungeon where you do the RPG battle part.
Starting in the second chapter they also have this (virtually) unbeatable enemy that wanders around the map, blocking your ability to do the investigations for no real purpose.
I’ve gotten mixed information about how Japanese players responded to the game. It apparently sold well and Famitsu gave it a 31/40, but there are reports that it was being sold in used game stores for 500 yen soon after its release. I’ve seen this happen before and it’s basically an indication that a lot people bought the game but then quickly sold it, resulting in a glut of copies of the game in the used stores that not many people are buying.


























