Colorado has nearly 50 casinos, and as of May 1 2020, sports betting is legal in this state. You can do this through a licensed casino with mobile or retail locations. They also have a state lottery, and the only online gambling at the moment, before any more legislation is passed, is off-track betting on the hounds and horse racing. So, according to Colorado online gambling laws 2020 it is now legal to bet online via sports betting sites, such as William Hill, BetRivers CO and BetMGM Colorado, but illegal to play at online casinos and poker sites. You can also play lotteries, go to land-based casinos, bet on horse races and play DFS games. Esports betting is also allowed in Colorado. Try NBA 2K League.