Metroid Prime 3 Prototype

The Metroid Prime 3 Prototype is an early, clearly unfinished version of the E3 2006 demo of Metroid Prime 3: Corruption that leaked online. The build date is 3/2/2006 14:55:13. While there's not a whole lot of interesting stuff in terms of cut content, there is a huge wealth of debug data and ingame debugging tools that aren't present in any other publicly available build of any Retro title.