Yesterday, I added "PRESS FIRE 1 TO PLAY" and changed 2018 for 2019.
I noted when I press fire 1 to start the game, in a fraction of a second, I noted something appeared on the screen.
I put delay when the second screen is about to appears.
Sprites from the intro somehow re-appear briefly before they disappear.
That's I'm working on it.
If this problem still occurs, I might ask for help.
Note: if the sprites look messing up, I use simple_sprites in title screen and double_sprites for the game.
I found the problem: I need updatesprites after I set title sprites y to 208.
Here the rom: ok 15.rom