The Sonic Runners Japanese Twitter today confirmed that Shadow the Hedgehog would roll out onto the mobile title beginning later today:
— ソニック ランナーズ 公式 (@SonicRunners_JP) August 14, 2015
In short, Shadow will carry a 75% speed bonus for every meter you run. However, players will have to try their luck on the roulette wheel to grab him. Unlike recent additions Cream, Big, and Silver, players will not be able to buy Sonic’s dark equivalent outright.
The game also switched over today to a special animal rescue campaign, moving on from the recent NiGHTS special.