The name ‘Triangle Strategy’ makes sense in its own way. Most titles for RPGs revolve around the game’s story. Triangle Strategy, Bravely Default, and Octopath Traveler are names that revolve more around the gameplay. It’s an unorthodox way to name any game, but it’s unique and it stands out.

“We usually put a lot of thought into determining the game’s titles. One of the things that we make sure that we think about is if the player can imagine what kind of game it is based on the title. When you look at Triangle Strategy, a triangle is three angles, and then ‘strategy.’ So it’s a strategy game that you play from three angles. Octopath Traveler is also named kind of from that perspective: Octo is the eight paths that you’re traveling.

We wanted to see what the reactions would be like behind ‘Project Triangle Strategy.’ So having ‘Project’ at the start of the name would give us a little bit of room to be able to change the name, but it ended up resonating with the audience, so we thought we’d keep the Triangle Strategy name.

… Another process that we go through when naming games is there’s a native English speaker on our team. So I talk to them when we’re naming the title, and one of the points we talk about is if the name is as weird or unique as Bravely Default and Octopath Traveler.”

https://www.inverse.com/gaming/triangle-strategy-interview-hd2d-remakes