Well really most you can get are the free versions of games if you dont have any money on your account... (just type in the exact name i put)
but the best ones i love are:
Fun Apps:
Red Panic Button
Bubblewrap
Facebook
Fluid
Go Green
I glowstick
Mood Pad
Do not press
Squeaky the duck
Games:
Action bowling free
Bark machine and dog tricks free
Chase the Dot
paper toss
Parkinglot
Ragdoll blaster
Tap tap revenge 1 and 2
Falling balls
Lemonade tycoon free (my fave)
i Dare
Checkers free
Chocolate shop frenzy free
Crack the code free
Blowfish
also they do get boring after a while even i tire of them. just keep looking for newer ones and such also go through the other app pages they have some that you might never see on the games pages