The group exclusively makes console RPGs, and is known for giving their games action-packed battle systems and deep skill systems. This trademark style began when the founders of tri-Ace originally worked for Telenet Japan's Wolfteam, and had created Tales of Phantasia. This game, published by Namco, is a precursor to tri-Ace's own Star Ocean games in several ways; i.e. an action battle system where the player controls one character and AI controls others in the party and special battle skills that the player can assign to different buttons. (Radiata Stories is the latest example of this design.) Besides the Star Ocean series, they also released Valkyrie Profile in 1999. Their most recent release, Infinite Undiscovery, was released in the United States by Square Enix on September 2, 2008.
tri-Ace games have sold over 3.8 million copies worldwide as of September 2005. The company's sound programmer Hiroya Hatsushiba formed tri-Crescendo in 1999 which has since independently developed Baten Kaitos and Eternal Sonata.
There are also optional dungeons in where the optional bosses are located. For the Valkyrie Profile Series and Infinite Undiscovery it is called the Seraphic Gate while in Radiata Stories it is called the Dragon Lair Cave and Distortion Corridor. In Star Ocean the Second Story it is called the Cave of Trials and in Star Ocean Till the End of Time the dungeons are called Maze of Tribulations, Urrsa Lava Temple, and Sphere 211. In addition to the optional bosses in the optional dungeon, the normal enemies you encounter there are at least two to five time stronger than they would be in the original story. Some who are not careful and get overconfident can get a game over on these enemies alone. Also there are no save points located in these dungeons except at the beginning, (The exception being Infinite Undiscovery which there is a save point on floor seven of the Seraphic Gate).