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