Thanks! I'm glad you enjoyed the game. The original Space Invaders was quite different. My version wasn't meant to replicate it, but it was certainly inspired by it.

For instance, the original didn't have health levels, whereas mine does. The invaders in the original were packed more densely across the screen, and the player had defensive bunkers that were gradually destroyed. My version doesn't include those. So while the two games are quite different, the original was definitely the inspiration that motivated me to create my own invaders-like game.