SEGA has partnered with Rovio to bring the Angry Birds to Sonic Dash.
Over the course of the next three weeks, players can unlock Red, Chuck and Bomb as playable characters for use within the endless runner by collecting special Angry Birds Epic tokens. Alternatively, the birds are available to purchase using a premium currency.
Once the birds are unlocked they're yours to keep forever, but you've only got three weeks from today to unlock them. Whether they're anything more than just skins, though, isn't particularly clear.
"Our EPIC Sonic collaboration together with SEGA is a fantastic milestone for Angry Birds," said Wilhelm Taht, Head of External Products at Rovio. "Having two such iconic game characters and games work seamlessly together will delight millions of fans worldwide in both Sonic Dash and Angry Birds Epic."
SEGA announced earlier this week that Sonic Dash had passed 100 million downloads.