PROJECT OCTOPATH TRAVELER was the early name under which Square Enix presented what became Octopath Traveler, a role-playing game built in a distinctive HD-2D style that blends pixel-art characters with 3D environments.

It introduced the concept of multiple travelers, each with their own story and abilities, alongside turn-based combat centered on breaking enemy defenses by exploiting their weaknesses. The Boost mechanic lets players save up actions for powerful turns, a system at the heart of the finished game.