Looks like Hardlight Studio decided to give us a special Halloween treat.
The mobile game Sonic Dash now has a boss battle: Zazz, one of the Deadly Six from Sonic Lost World. And that's not all: the update also includes the "Deadly Six Card Collection Challenge". In this challenge, players across the globe must work together to collect a set number of character cards scattered across the Sonic Dash tracks. When enough have been collected by the whole community, those who took part will receive exclusive Sonic Lost World-themed prizes. This content is available only for a limited time, so get dashing!
Take a look for yourself: