There's a hint of gambling during one of the festivals in Stardew Valley, but you don't get into the meat of high-stakes winnings until you find the Casino. Located. Stardew Valley is an open-ended country-life RPG. There is no way to turn your casino coins back into money, the main point of the casino is. The Casino is located in Calico Desert accessed through the back door of Oasis. Access is initially blocked by.