Well if your looking for cheats some good sites are Cheat CC (cheat code central). If your looking for hacks bing it. That's all i know, sorry.
Google all the way matey
pretty much ANYTHING
In engines - during ice skating.
Refrigerators, combustion engines, air cannons, SCUBA and submarines.
Graphics engine of course means graphics. Game engine however might mean how the game runs. That or you mean Source engine where you can download the game onto another game.
Game Maker contains a fully functional programming language (GML, or Game Maker Language) which allows you to create game engines, games, applications, utilities, etc...
Yes. There are a couple of free game engines such as the Real Time Strategy Game (RTS) and the Turn Based Strategy Game that can be used for commercial use.
You could find information about used engines at basically any place or internet leader that sells used engines here are some leading sites that you could find your answer that I have found useful www.info.com/FindUsedEngines www.peeplo.com/Used+Engines www.ask.com/Used+Engines
Friction is useful when you are trying to stop a car, but not useful in the pistons of a car's engine (It makes them less efficient).
to play a game.
Google is the best search engine for searching websites, And bing is also.
Used properly where it was intended to be used for gasoline powered engines is useful. Breathing gasoline vapors to get high is harmful not mention stupid.