Welp. I know what soundtrack I'm binging. How can I play the game? I've heard of it but it seemed uninteresting at the time even though I had heard Yoko Taro and Keiichi Okabe had part in it. Now I really wanna play it-
It is probably an arrangement of the Colosseum themes that plays during the SINoALICE x DOD3 Collab event. Can't Find Links, but probably will be easier to find after the event release in the Global server