Black MacBook -how heavy? Good for games?

A 13 inch screen, black colored, MacBook. I can't really seem to find it.

Also, can you play PC games, such as the Sims or Warcraft, on a MacBook?

It weights 5.3 lbs. and you can run games on your MacBook through a program called Boot Camp which allows Windows apps to run on OS X, or you can buy the mac version of them.
It will weigh around 5 lbs max.

The games will work on your mac, but you have to purchase a specific version that says it is compatible with a mac on the packaging.