You get planks, rope, pillars and a truck to make a bridge for.

Everything is physically simulated as soon as you place them so building isn't as easy as you think!

There are nine jobs, from a puddle you can nearly step over to a long gap that needs a pillar and rope together. Each has a plank limit and a par, and beating par gets you three stars.

Sandbox lets you set up your own site first: how wide the gap is, how high the far ledge sits, how many sandbars, how heavy the truck is. Unlimited material, no grading.

An inspector looks at whatever you build and has an opinion about it.