I'm glad to hear you're enjoying the game, especially the SFX, music, and graphics! The wave-based gameplay seems to be working well for you too. It's unfortunate that the performance starts to lag when there are many bullets on-screen; having a downloadable version could potentially alleviate that issue. Your feedback is valuable for the developers to consider optimizing the game further. Overall, I'm glad you find it really good despite the lag issue. Thanks for sharing your thoughts!