IncrediBots.com is a website with robot games you can play – you can do challenges like drive a tank, launch a catapult, construct a car-bot and other cool stuff. I’m really bad at it but I’m sure you’re excellent!
More on robots: have you checked out Robots! Draw Your Own Androids, Cyborgs & Fighting Bots by Jay Stephens? This book will show you all you’ll need to know about how to draw robots. Have a look and then impress your friends with your robot art.
If you’re more into building than drawing then there’s Making Robot Warriors from Junk by Stephen Munzer. Here you can learn about making robots using everyday household items. You can even fit lights and buzzers to your robot to make it more, well, robot-like.