What games sites aren't blocked by schools?

Answer 1

Schools tend to want you to work and learn rather than play games. That said, during downtime games can be quite relaxing as long as you don't disturb other people.

Proxies are popular, but schools libraries and workplaces filter content for a reason. In a public place other users may be disturbed by raucous game playing, videos, or even p**nography. Content heavy sites can use up bandwidth affecting the performance of people using the computers for their intended use (e.g., researching). In addition, anonymous proxies are not secure - they are sometimes used to log passwords (such as to Facebook) or spread malicious files which can steal personal data.