Miniclip is good.
I do like Miniclip, but I have a Miniclip game rating system. The ratings are E, 7, 12, 16, 18. E rated games are for everyone, 18 rated games are for adults only. A lot of kids play it in my school's computer lab and they're not using that site appropriately. They go on 12 and 16 rated games, or even 18! Rated 7 games are for everyone, but children under 7 years old require a parent while playing rated 7 games. Games rated 12 are suitable for children 12 and older alone, but children ages 7-11 playing 12 rated games require parent supervision. Games rated 16 are not suitable for children under age 16 at all. If someone under the age of 16-18 plays a 16 or an 18 rated game, They might be banned from Miniclip.