Some fun online games are Crazy taxi, Papas freezeria and The ice temple. For some other fun online games, click on the "related links" listed below.
Yu-Gi-Oh is fun for some individuals who prefer card games and strategizing.
There must be some NFL games online, but due to the subject, I doubt they are fun.
miniclip.com has a lot of online games
www.thekidzpage.com give a lot of educational fun free online games for kids. I'm sure they will find it very fun and excited about how many games there are.
there is arcadeprehacks.com
Gangsternation.net
pogoarmorgamesaddictinggamesminiclipplaygames2call of dutyclub penguinmaplestoryfarmvillepoptropicastar wars battlefrontego-cityclubpenguinfantagepuzzlepirates (you don't have to download)habborunscapefunminplay a game called around the work in 80 daysCard games such as:spadesgin rummyheartsPirates of the Carribean Online, Toontown, Wizard 101, Free Realms, Webkinz, and if you are 13 or older, Farmerama is a fun game!
babydow.com is pretty fun howrse.com is for boys and girls but its fun
The game Pirates of the Carrabean Online is fun, along with Nanovor, Fusionfall, and Roblox.
Dirt 2 and the forza series are fun.
pokemonindigo.com and pokemonblack.com!!!!!!Have fun.