May 08, 2012 Patch

{{Patch layout
 * source =
 * source-title =


 * before   = October 24, 2011 Patch
 * current  = May 08, 2012 Patch
 * after    = May 09, 2012 Patch


 * notes =

Undocumented changes
}}
 * Released the Perpetual Testing Initiative update.
 * Added Puzzle Creator
 * Added Steam Workshop integration.
 * Updated the Valve intro movie.