Crash Twinsanity/Concept Art

In Crash Twinsanity, concept art is unlocked by collecting gems hidden throughout each level. There are six gems to be found per level, each of a different color: blue, clear, green, purple, red, and yellow. With sixteen levels in the game, there are a total of 96 galleries, though some galleries contain multiple pieces of concept art. A gem's color indicates the type of concept art it unlocks.