Do you need a fun way of teaching kids the basics of the physics and engineering principles behind bridge-building? You may not have to commission your own game, because a lot of that is covered by a fun new casual game called Cargo Bridge. Cargo Bridge is similar to Lemmings , in that you take the roll of powerful caretaker who must keep a group of creatures with no sense of self-preservation alive. In this case, you've got a handful of workers who need to collect precariously laid crates, elephants, and safes, and bring them back to their base. The way you allow your workers to succeed is by using your bridge-building skills. The game uses a physics engine to simulate the physics of bridges. You have a certain budget that you can use to buy walkways and supports, and you have to place them so that they support each other. You might be very surprised when you start out to see your bridge design isn't up to code. When an unstable bridge is created, it might fall apart under its own weight as soon as you start a level, or it might be a little more stable, and not collapse until your workers are trying to use it to move heavy crates.