Triangle Again games are often referred to as music adventures rather than typical visual novels in a way that when the branching in the story occurs, choices are presented in a way of notes rather than text. The game story is centered around young Akari Tateshina and her debut as a pop singer. Additionally to typical set of options for this type of game (i.e. clickable versus auto-scrolling text), Triangle Again offers positioning of the text messages (up or down) and also support regular and widescreen picture presentation.
There are several licensed songs used in the game as protagonist's song hits when she sings them during animated scenes. While same songs are used in both Xbox and PlayStation 2 release, Xbox songs use Japanese lyrics while PlayStation 2 songs use English lyrics.