You can explore Mars for free, as NASA is offering a simulator that allows you to travel on the surface of the planet with the Curiosity exploration vehicle.
With Experience Curiosity, it is possible to look at Mars through the eyes of the exploration vehicle.
Those wondering what kind of an experience it would be to set foot on Mars can begin the journey toward Mars by clicking the link accessmars.withgoogle.com
You can navigate on Mars and explore the hitherto undiscovered parts of its planet. These virtual tours are completely free. A small note before embarking on a virtual tour to Mars: The resolution will be clearer if you access it from a computer or tablet.