I've come to love playing shmups while riding my spin bike. The need for an intense focus while playing keeps me from getting bored while working out and hypes me up to pedal faster during intense or hype sections.

was originally limited to danmaku games (CAVE et al) but expanded a bit to tube and non-bullet hell scrolling shooters

Separating these from my to-play backlog as they have a specific environment around their play.