Not all titles released as a "Special/Collector's/Etc. Edition" are necessarily in any substantial way superior to the standard edition. True Collector's and Limited Editions are those released with extra materials or content, that were limited in every case. For example, most Game of the Year, Gold, or Platinum editions are re-releases and rarely contain anything of extra value nor are of particular limited release, and thus are not generally considered Collector's or Limited Editions. 
Computer and video game collector and limited editions (commonly referred to as CE and LE's) are video games packaged with bonus materials and enhancements not available in the standard release. Such bonuses can range from special packaging to printed artwork to extra discs containing additional content. These versions are typically of a predetermined limited release and act as promotional tools for the publisher, and items of value for collectors. 
