Algodoo

Build a machine that can pick up, carry, and stack the three colored blocks on the course. Must fit inside the area outlined in red. Points are awarded on the machine`s capabilities (can it reach and stack all three? Does it need to drop one off before it gets the next one?), reliability, and how much I personally like the design.
I`ll figure out the exact scoring system when I make a contest thread in the forum, whose URL I`ll put in the comments.