Thanks so much! Yes, you're right 🙈😂! I'm thinking also of making the enemy/projectile spawning a bit more sophisticated so that sections that have more blocks stacked up get a faster rate of projectiles which should help prevent isolated columns building up too far, and also make it easier to build new rows back up once they have been destroyed, as at the moment it can feel a bit of a wasted effort as they get broken up so quickly :)