tri-Ace, Inc. (株式会社トライエース, Kabushiki Gaisha Toraiēsu) is a Japanese video game developer founded in 1995.

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; e.g., 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.

After their long-time Square Enix liaison and producer, Yoshinori Yamagishi, announced that he was done working on the Star Ocean series in 2009,[2] several of tri-Ace's works started to be published by different game companies other than Square Enix.

[4] The company's sound programmer Hiroya Hatsushiba formed tri-Crescendo in 1999 which has since developed several games independently of tri-Ace.