SimplePhysics is the sequel to popular physics game BridgeBasher, challenging you to make structures that will withstand the laws of gravity and nature--while remaining under budget.
You start with a helpful tutorial level that shows you the ropes by having you build a tree house. Your requirements are that you build the structure to withstand the weight of four 50-pound children (don't worry, they use boxes to symbolize the children). Before testing the integrity of your structure, draw supports between onscreen anchors to make sure your tree house will hold. When you're satisfied with your work you can put your tree house through a Certification test, but it must hold the weight of the four children for 10 seconds in order to pass.
Every level in SimplePhysics has new requirements and challenges you'll need to meet to pass, but the game gives you lots of tools to help you test your structures. Before certification, you have the option to use a "finger" test, in which you touch and drag support trusses to determine their weak points, making it possible to alter your structure before the final test. But even with the added information, we found this game to be extremely challenging, especially in later levels.
Overall, SimplePhysics makes for a great successor to BridgeBasher, with several useful interface additions and structural challenges to keep the game interesting. But be aware that this game will definitely challenge you and you may end up doing levels several times before you succeed.