First the 360 PartnerNet leak, then the Japanese Wii Shopping Channel leak. Now, we have video of the QA Network’s version of Sonic 4: Episode 1.
While there’s no leak of the game itself, and from the looks of it, the game won’t run unless the PS3 in question is a debug unit, the video shows enough of the gameplay to satiate curiosity on the game.
Content wise, if you’ve seen or played the Wii and 360 leaks, you’ll already know what to expect here. However, the PS3 version has its very own little oddities that make the game almost unplayable.
Forum member sonic4dude describes that the game has a poor implementation of the SIXAXIS tilt control APIs that make them extremely sensitive, to the point that levels like the special stages and the Lost Labyrinth mine cart stage are barely playable. On top of that, being a Japanese prototype, the game will only boot in Japanese.
As for the timestamp on the build, it’s roughly December 2009 – January 2010. The QA Network is Sony’s equivalent to Microsoft’s PartnerNet.