Many flash ,Html5 and WebGL games are great. Some schools have blocked websites where you can play them, and even if you manage to get them, will be reflected in your history. Many schools and businesses have done everything as possible for who from their computers may not be accessed in this type of websites. But in computer science, nothing is impossible. This requires that you have a computer without any restrictions in your house, though sometimes this can be done on a computer in a library that does not have surveillance.