Savewarp

Savewarping is a glitch happening exclusively on NTSC XBOX that makes an autosave in the wrong chunk, creating a save file with a normally impossible spawning point. You trigger the glitch by dying in a chunk directly connected to the one you last autosaved in, all without activating checkpoints so you respawn at the world crate. The new spawning point can be at a checkpoint, a gem or other spots.

History
In 2014 Gpro found the glitch and BetaM made a video with some examples.