Like the Ace Attorney series, Kira Game is a point-and-click adventure game with a plot revolving around the Death Note series. Light Yagami is trying to hide the fact that he is the Kira, while L is trying to find out who the real Kira is. As Light, you have to steer the suspicions away from you as L looks for the answer. As L, you must find evidence to prove what Light really is. You must interrogate other people and meet familiar faces from the anime/manga series itself.
Main Menu
The Main Menu is set up into squares, each one representing a different mode or option. Story Mode is a full story from beginning to end and split into episodes. Your goal depends on which character - L or Light - you choose. Single-player mode is its own random story. Unlike story mode, single-player mode has nothing to do with the anime/manga series aside from the characters. Out of a group of people, you must decipher which character is the Kira. The final mode is VS mode. Play head to head against another person with the DS's wireless multi-card play.
Basic Gameplay
Every move you make should be based on how people act towards you and what they say when you interrogate them. Depending on their behavior, you can choose to keep interrogating them, accuse them of being the Kira, or move on to another suspect. You also must keep the suspicion directed away from you, shown by the green numbers at the bottom-right corner of the screen. You start with 100/100, but depending on your actions, they can go down, thus affecting your status as trustworthy. Every action can cause a reaction, either on your part or another characters' part, so choose your decisions wisely or lose the game.