Laser Cannon (1) only has 25 levels and you can't move the cannon. The game you submitted with 30 levels is Laser Cannon 2.

I thought I was going insane trying to find the right game with 30 levels but eventually found out there were more games in the series

@DRAGUN_exe Ive sorted it out. I got confused becasue I played the Friv version of the game, and that version just says "Laser Cannon" instead of "Laser Cannon 2". But now its fixed, and the original Laser Cannon will also come soon to the site