Oh you sneaky kids with your video cameras, loving nothing more than to spoil everyone's fun - you've done it this time, and it's Sonic you have leaked onto the internet.
Cheeky little runts.
Don't hit the break if you want to remain unspoiled and pure.
Over on GameVideos, 1UP has posted some shaky-cam footage of the blue one's return to 2D glory and the site was also sent some screens.
Better go look before SEGA starts yelling and it disappears forever - or until someone loads it onto a torrent.
The screens show four zones: Casino Street, Lost Labyrinth, Mad Gear, Splash Hill and a Special Stage from episode one, scheduled for summer on PSN, WiiWare and XBLA.
Sonic 4 was officially announced earlier in the month.