The Mac OS comes free with a Mac. New versions have a small charge.
There is currently no version of Pivot for Mac OS X, free or otherwise. An alternative would be Stykz which is available for Mac OS X and is free. (See links below)
I don't use those, since I am a programmer myself and I prefer to write all the code, but I can suggest a place where you could find one. Go to sourceforge.net. It has thousands of free software of any kind for any operating system. You should be able to find any kind of software you are searching for on that website. It has everything, and everything there is free and open-source. SourceForge even has a whole software category for code generators, it should contain game makers and some of them should have versions for Mac OS X.
nowhere, just use crossover on mac OS x.
Yes, it is. Any type of MacBook that comes out now is a Mac OS X. The most recent version of Mac OS X is Mac OS X Lion, coming out soon.
Office 2010 is compatible with Windows 8 running on a Mac. It is not compatible with any Mac OS.
A legitimate copy of Mac OS X 10.4 will only be available to buy.
it is illegal to do this
Ask for it for your birthday or Christmas.
Unfortunately no. The mac OS is specially designed to install on macontosh computers.
iChat is provided free with all Mac computers (See links below) and can be installed from the Mac OS X installation discs. It is not legally available from any other source.
Yes, there is Pencil, and it's free. There are many versions for it like Mac OS or Mac OS X. Personally, I just got it and it sucks.