i mean is there a freesource .gmk file for Castlevania so i can work over it... or do i have to create everything from beginning
sigh.
If you don't feel like investing the time in learning the program yourself what makes you think you are going to be able to work over someone else's work?
Or even worse trying to pay someone to make an engine for you. (Which I wouldn't recommend at all before you get taken advantage of.)
I think it would be more beneficial for you in the long run to start from scratch. That way you can make your game exactly like what you vision in your head.
Looking at someone's else's code and using that to learn is one thing, but trying to code over someone's work without having a proper foundation yourself, Bad idea.
Bro, it seems that you are another one stuck on JUST using game maker. I know it's not the popular opinion from a pro game maker crowd, but weigh all your options.
There are plenty of other 2D game designing tools free on the net with Castlevania examples, even working engines.
If you insist on using GM maybe you should try a different/easier type of game, follow that tutorial, and then use what you learned with that to start building your own Castlevania engine...