Just because there is no legislature to define online casinos in the Centennial State, that doesn’t mean anyone can gamble without consequences. Keep in mind that law enforcement can technically take action against the operators, but choose not to.Therefore, it would be best to play it safe and not try to play at online casinos in Colorado if you’re under 18. Again, as there are no casinos officially based in Colorado, you will be subject to the laws of the country/territory/state where the site is based. 18 is the usual limit.