Review for Thunder Valley Casino Resort Review For Thunder Valley Casino Resort Google User Sep 30 '16 at 1:56 Tough to decide between 4 and 5 stars. Love the buffet as well as the fact that the only Fatbuger in all of Northern California is located inside their food court. Fast paced Vegas style casino action but would love to see looser slots. Beats driving 2 hours to Reno though. View full site to comment or like