Algodoo

I forgot to mention: those little orange things mark jumps, and hit enter to remove the detail if you're having lag.

Also, Algodoo may be the best thing, since the best thing since sliced bread, but I liked it better when it was "Phunbox" not "Algobox". They should be separate or something.
(and no, that's not a typo, I intentionally repeated "the best thing")

I agree. I hate how now you have to guess if it was made for algodoo or phun. it irritates me.

i agree, almost everything in phun i can't even play because of stupid algodoo