How do you put a game on an HTML site you made yourself?

How do you put a game on an HTML site you made yourself?
Well it depends on what type of platform the game is using, if you're using Java then you would want to throw in some JavaScript along with the applet (to run the game of course), you just fit into the HTML somewhere around there. If you're using Flash then you should just be able to put the game coding in the HTML just like you would put the Java applet in the HTML. However, if you're wanting to put a game from another site (one you didn't create) onto your site, then you can right-click the game itself and select view source, or do it to the site and search through the lines of coding to find the right coding for the game, and copy and paste to wherever you want it in your HTML code.