If you love physic-based games, Apparatus is definitely for you. Apparatus is one of the coolest, free android games. This takes you to the world of physical mechanics, where you can build anything you want!
In this cool, free android game, all you have is your physics concepts, scrap materials like wood, batteries, and some tools. You have to build some mechanism, which helps the marble travel from one point to another.
Enjoy the game by setting up some teeter-totters, building bridges or have some motors run with the help of batteries you have on hand. Let your marbles reach their goal by enjoying an awesome ride to your newly created roller coaster.
Now with the available tools you have, join all the materials using your physics concepts in a way that helps the marbles reach their goal. Join wood with your hammer and join cables with batteries to run motors, attaching cables with wood corners results with different swings, etc. Keep in mind you can build anything. The possibilities are limitless.
See the video below for some suggestions and install the game to see the remaining options for yourself.
Android App Screenshots: