First of all, even KGB doesn’t seem to compress THAT well (however it does a great job). BUT, using the best method of compression gives you a file ***.kgb . Yes, I’m sure a lot of extractors can handle this extension but still, when you want to save the trouble with some people asking you about the extension, you will need the archive in .zip or .rar . And all the great compressed games or Windows versions I’ve seen really were in these formats.
So my question is, how is it possible?