There are lot of sites for kids games, why dont you try there ? like kidsites.com, kidsgames.org or kidsmmorpg.com
I hope you do not give your kid a war game, because it will make your kid bad, give him an education game, such as puzzle maybe etc
Why do you need a game for your kid? I suggest you to keep your child off the computer to the age of 16 as a minimum term. Computer is a bad habit for any kid and as an example there are some special schools in Chine, where kids are quiting the computer addiction.
There are lot of category of kids game available on internet such as Math games, Mind games.............. I wanna suggest you to visit to kidsgames for your kids.... Thanks
Try to visiting Miniclip.com where you will see bunch of flash games which are really good for your kid, as well as if you want name some particular game so I'd like to recommend Sonic, Mario Bros etc are best for him.
There are lot of kids game available on internet. search kids game in google and get lots of game to you but you give your kids puzzle game.
so your kids is girl or boy? if it is girl , maybe you will love our sites , especially for girls games .
Puzzles games is best for kids... specially treasure hunt is best because kids want play together.....