Beat hazard 3. It’s in early access and I love the simple concept of “music creates the stage”. You can use digital copies of songs, or in this new fangled age of streaming it allows for a plethora of other streaming services and even just desktop live audio if you happen to have some dj streaming on twitch open.

It’s basically asteroids with upgrades, bosses, and waves upon waves of musically generated ships to blast.

Each track completed awards a unique new ship to pilot, procedurally generated. There is a galactic conquest mode where all your music is made into clusters in it’s own galaxy. And the solo dev of the whole thing went ahead and added upgradeable special attacks in the most recent update, which is why I’ve been playing this week.