Step 2 of iOS app building

http://www.raywenderlich.com/1797/how-to-create-a-simple-iphone-app-tutorial-part-1 http://maniacdev.com/2012/10/tutorial-how-to-quickly-create-a-game-using-the-cocosbuilder-cocos2d-editing-tool/

Sc8 Challenge – Pop Bottle Rockets

After watching a coke can collapse, a pop bottle rocket launch and studying a little bit about air pressure, you task is: Create a pop bottle rocket that will stay in the air the longest. Groups are allowed. Testing and…