Its ok but not as unrestricted as advertised...
Fun game and challenging but there are restrictions to it. In order to open up a new world you must complete every bridge under very specific criteria to achieve enough tokens, or whatever, to move on to the next.
As others have said the tanker would be nice and so would multiple tankers to test the bridges that are unrestricted.
It was $2 and worth the money but not quite what was advertised.
Ugh tactic about
Bridge Constructor Playground