What are the most popular game building software most game designers use?

I am an game designer need to know lots of info about game designing,If you decide to answer this question'please give answer and alot of info to support and examples.What are the most popular game building software most game designers use?beginning, first time game designers use things like Gamemaker:

http://www.yoyogames.com/gamemaker/

its very easy to learn, while you get a good start at programming, and you develop an idea about what makes a game challenging, exciting and fun to play. besides, you never have to close the program, since all the resources you need are kept within the program.



for the designing of the game at a more advanced level, some people take enough with paint for the designing, and word for the screenwriting. though, most drawings are made on paper and sometimes digitally edited.



if you really need some software, for the screenwriting i use a program named Celtx. http://celtx.com/. it's very easy and clear, and lets you create character profiles in which you describe your character. besides my two favorite which i just summed up, there are other helpful functions.



if you need to design a level (or world) you could use any Cad drawing program. most of them take time to learn, but they are very useful.What are the most popular game building software most game designers use?It seems like every other game is built on the Unreal 3 engine , though it's getting kind of dated.