Free online horse game where people of all ages can learn the responsibility that comes along with taking care of horses, and have fun at the same time. Do you like to play online horse sim games? Here is a run down of some most popular and interesting online horse sim games on the web. Indomita is a wild horse hybrid simulation /rp game. Unlike in a standard sim game where you would run a stable or train horses for competition, Indomita is much.