Game Sealed

Game Sealed

Game sealed means just that... the game is still sealed; it has never been opened.

Collectors like sealed games.

There are even websites and forums online for collectors of sealed games, one such being Sealed Game Heaven. It is specifically for:

The Sealed Game Heaven Project is a community dedicated to the collecting & preservation of videogames – old or new – in their original unused condition for posterity. We strive to preserve not only these highly collectable items in perfect condition, but also our memories.

I guess it's like any collector, whether it's video games or Barbie dolls, the ones that are worth more are in unopened packages.
Sealed Video Game Collection (Part 1 of 2)