Having the player follow the mouse was an awesome idea and the delay between the two was really well executed. Additionally the music and sound effects made it a lot more immersive I felt like I was back playing arcade games. The only things I would add would be to make it so that when the player catches up with the cursor it doesn't bug out. Next I would change the alien spawn so that the aliens image can be fully seen by the player as it has a tendency to hang off a little bit. But apart from this its a really fun game and I could see myself playing for hours.