SHIRO Casino has been closed and no longer operates. The revenue of a casino is an important factor. The revenue of a casino is an important factor. SHIRO is a casino that offers a wide variety of online games. /10Safety Index Low by Casino Guru. . According to our research and estimates, SHIRO Casino is a smaller online casino revenue-wise. SHIRO is a casino that offers a wide variety of online games. There is mobile gaming, and there are several deposit and withdrawal options. Browse recommended casinos. According to our research and estimates, SHIRO Casino is a smaller online casino revenue-wise. There is mobile gaming, and there are several deposit and withdrawal options. SHIRO is a casino that offers a wide variety of online games. There is mobile gaming, and there are several deposit and withdrawal options.