Sky River Casino in Elk Grove is just weeks away from opening. It will include 2,000 slot machines and 80 table games. The casino was developed and built for the Wilton Rancheria Tribe by Boyd Gaming. The tribe fought for tribal recognition, for their land and for this historic project. Sky River will open in September 2022. iReport.com will let you know when the casino opens. for commenting. on the article. For confidential support call the Samaritans on 08457 90 9090 or visit a local Samaritan’s branch.