There was a discussion about flash games on the forum a while ago. one of the best games mentioned was coconut run. basically, you construct a vehicle to carry the coconuts across an obstacle course to the goal. here is a video.
phun gives you the same physics (perhaps better) in a SANDBOX! yup that’s right, anything goes! take a look:
it’s available on Windows, Linux, and Mac
I downloaded the linux 64bit version a couple of nights ago and it works like a charm 🙂 .