I love shmups. Good shmups usually have a good rhythm, yours is on that path, and the cadence between waves is pretty cool and balanced. About the sound, the songs are VERY GOOD, you made? They give the game a whole personality, really good!!! Still, about the sounds, I found the sound effect of the pentagram very loud, as we get many, it ends up bothering a little. Overall I thought it was very good, we need more shmups, congratulations, it's a great game.