Amazon has quite a few games for different consoles currently on sale. Some of these have quite a nice discount. You can see the full list of video games on sale here. But here are some of the items on sale:
Kung Zhu includes Kung Zhu Hamster for $9.99
LEGO Harry Potter: Years 1-4 for Nintendo DS $10.99 for wii is $19.99
Kinectimals for $29.88
Toy Story 3 The Video Game for $19.99
All of these ship free with super saver shipping when you spend $25 or more or with no minimum purchase with Amazon Prime.