How do I modify the missile command game by Kyatric?

https://www.dropbox.com/s/m7y0nbv589dap ... ratch.capx

https://www.scirra.com/tutorials/385/a- ... atch-video <- by Kyatric

basically I tried changing the cursors and the missiles, and added an explosion sound when a meteor is destroyed

the missiles and meteors won't spawn and the cursor acts weird when I click it

Cursor acts weird: image point of Cursor sprite.

Missles & Meteors won't spawn: there's no layer "background" on your layout.

Cursor acts weird: image point of Cursor sprite.

I don't understand the first half of what you're saying. Image point?

But yeah, the layer thing was an oversight when I was changing things around, thanks.

Image point: https://www.scirra.com/manual/63/image-points

The origin image point of two animation frame (normal & red)do not match, that's why it looked weird when animation frame changed.