These are all entries bearing the tag unlockables.

• Unlock This
  Posted on January 10 2008 — games, game design, unlockables, konami, castlevania, smash bros — 0 comments

  A common feature of newer games, especially games that feature "optional content" that needs to be explored, is the concept of the unlockable. In the Soul Calibur games (as well as many other fighting games), they take the form of new weapons and costumes for the characters as well as a few new characters. The EA Lord of the Rings games lets you unlock cinematics, concept art and other such trivia as you progress through the game. Sometimes, entire games can be unlockable—Metroid: Zero Mission for instance, has the original Metroid available after you finish the game.