What kind of gambling is legal in oregon?

30.740 Right of gambling loser to recover double losses. All persons losing money or anything of value at or on any unlawful game described in ORS 167.117, 167.122 and 167.127 shall have a cause of action to recover from the dealer winning the same, or proprietor for whose benefit such game was played or dealt, or such money or thing of value won, twice the amount of the money or double the value of the thing so lost.