What is the TransPlan game, how does it work?

According to the introduction of Kittehface Software, TransPlan is a Puzzle game on the Android platform. There is currently a 1.1.2 version released on Aug 22, 2015, you can see the details below.

Deliver a payload from point A to point B with only a few simple tools and the laws of physics. Create ramps and catapults, watch objects tumble and fall, and someway... somehow reach the destination. Each project is a hand-drawn puzzle for you to interact with -- Devise a plan, experiment, and make it happen!

TransPlan features dozens of projects to explore, starting simple and growing ever more complex. Unlock later puzzles and categories by completing earlier ones, and finish projects on-budget to earn hints to help you later on. TransPlan fully supports achievements and cloud saves so your progress will stay with you anywhere!

What's new in version 1.1.2 - Fixed bug with Google Play Games sign-out