For students who are on summer vacation at home, it is apparently not a good idea to go outing under the blazing sun. Instead, staying at home with air-conditioner and playing games comfortably is a good way to relax. After all, for students who have worked hard in the past semester, summer vacation is meant to be getting rid of heavy study pressure for a while and relaxing. Moreover, as they rarely have time to relax because of the tight schedule, most of them will choose to reward themselves by playing games during the summer vacation.