X Construction – Amazon Free app of the day

A fully loaded train needs to get through, and you’ve got to build a bridge to support it. This physics-based casual game uses building materials and civil
engineering principles as you build. Fifteen puzzle levels limit your supply usage, but you can pile it on in seven free-build levels. Minimum Android 2.1

Get it here
http://www.amazon.com/mobile-apps/b/ref=topnav_storetab_mas?ie=UTF8&node=2350149011
http://www.amazon.com/gp/product/B004SPETQ4?ie=UTF8&ref=mas_faad