There are allot of java based games out there easiest way to find them is search for brand name cartoon themes or kid related television shows. You will be amazed at how many there are and most are free. some even educate while they play.
I found a website that has games on it for people of all ages. It is called "games at
Miniclip.com". I like this site because it has "cool", educational, leisure, and five minute games on it. There are probably many other websites that have "cool" games on them as well. I would go to Google and type in the words free on line games for kids. This will probably give you a lot of websites that you can check out.
its aqworlds.com
There are several online spelling games that can be used for educational purposes. For example Learning games for kids and cool math games are ideal for teaching you child.
bubble spinner
There are all kinds of great math games available for kids. One place to find some is a company called Coolmath Games. There you will find some cool games like Math Man and Fraction Splat.
One can find a good review for kids online games on the games site themselves. Most online game websites for kids will have a section where you can read feedback about different games and sites. You can also use yahoo answers to look at some thoughts people have on different online kids games.
Call of Duty!
cool math 4 kids is a great website!
Play animal games for boys online at Pet Games , Animal Planet, My Animal games. These are all free online and offer a wide array of games where kids can play with animals.
I know some two cool games for kid's is club penguin and poptropica
KCVDS at kaibacorporation.com
It depends on what kind of games you are talking about. There are several websites out there that will let your kids play online and most of them have some games free of charge, but there are also some that charge to play. One of the websites is www.gamesheep.com.
There are several website which have great kids games. You can go to cartoonnetwork.com. They have great games. You can also go to nick.com as well.