Box Counter

A Box Hologram is a feature first featured in Crash Bandicoot 2: Cortex Strikes Back, usually located at the exit of a level. It consists of a three-dimensional hologram of a spinning box, also featuring a box counter. If all boxes are broken, the hologram will turn into an actual Clear Gem for the player to collect.

Box Holograms are kept in Crash Bandicoot 3: Warped and Crash Bandicoot: The Wrath of Cortex, however some non-platforming levels (especially the flying levels) don't feature a Box Hologram as they don't feature a proper exit either. Because of that, the Clear Gem is acquired automatically when the last box is broken.