The third entry in the touhou series was originally going to be a horizontal shmup funnily enough, but I guess ZUN changed his mind after playing Twinkle Star Sprites and instead made a vs shmup very much in its style. I've come to like this style of shmup quite a lot recently. The snowballing chaos and dynamism of vs shmup gameplay makes it stay fresh where many other shmups naturally become stale. Plagiarised assets aside, PoDD still feels like a unique and fun entry in the prolific Touhou series, also imo even though the first two touhous did still have decent soundtracks, this is where ZUN really started to enter his element in terms of consistently pumping out banger OSTs.