UPDATE: SSMB member Hero of Legend has re-uploaded his video with all 3 clips in, thanks dude! Also, thanks to SSMB member Woun, we have all 3 clips in HD at the below links:
Game Land 1: Act 2
Dig Underground
Teamwork
/UPDATE END

Footage of Sonic Colours‘ co-op mode has been revealed, courtesy of IGN, who recently got some hands-on time with this feature. Do you remember that robotic head on the games map screen that looked a little like Metal Sonic? Well, it isn’t Sonic’s robotic rival.  It’s a planet called Game Land where all of the co-op levels are staged.

As described in IGN’s preview, two players take control of a robot Sonic each and advance through the level by working together, while also trying to compete for the most rings. In the footage we can see some of the various Wisp combos that IGN mentioned, such as the Spike Wisp combo that has both players tethered together in a similar fashion to the old Mega Drive 32X title, Knuckles’ Chaotix. A Lazer Wisp combo is also shown, where both players combine together to form a stronger and larger double lazer attack on a string of enemies.

The levels look as odd as in the original screenshot, but the stage design seems to fit the speed and co-op play to a button. No split-screen is shown, so it appears both players have to keep up with each other on the one screen, but since co-op actions are required to advance through stages then this shouldn’t be a problem.

Source: IGN:
Dig Underground
Teamwork
Game Land 1: Act 2

Thanks to speedduelist and Diogenes at the SSMB for the heads-up!