Review for Thunder Valley Casino Resort Review For Thunder Valley Casino Resort Google User Dec 3 '16 at 0:51 Nice, large casino. They would have earned 4 stars but they desperately need better air ventilation - its extremely smoky. People smoking everywhere. They have a nonsmoking room but it's the size of a waiting room and has older machines in it. The air in there is so much better but feels caged and depressing. View full site to comment or like