There is the WolfQuest game. It is a very fun downloadable, free game where you take on the role as a wolf. You don't necessarily get to breed, but you do have pups in the second edition (no customizing... sorry!) But give it it a shot; one of the best CPU games I have ever downloaded/had!
KODU game lab will be the easiest way...directdownload from microsoft
Howrse is a great horse-breeding game and is completely free. Choose marsyay as your sponsor.
flashportal.com has a lot of free non-downloadable games you can try.
aq worlds or runescape or neopets or poptropica
Many computers come pre-loaded with games, and usually solitaire and spider solitaire are included. To find downloadable solitaire games, WorldofSolitaire's website has over 50 varieties of the game.
terraria, i think.
howrse.com is a good breeding game, but you only click to do things. Like you click go for a ride, train, feed, put in pasture, etc.
try funorb, it is by runescape or try evony (don't you'll regret it). however it you want a good downloadable game, try perfect worlds intenational. Why dont you try mabinogi its free or steam it has a bunch of games some are free
www.kidzworld.com it may say KIDZ world but its a good game you make your own pic,add friends and thers a live chat!!!!!!!!
nandeck- but u need a bit of computer savvy
I like Celebrity Pedigree
A good one is Cromimi.