It's day 3 for me, I've just got in from work so this is really the start of my day 3 sprint, except that I was able to do a bit of tinkering on the train.
I didn't manage to post an update for day 2, this is in part because I was battling with buggy physics and a screeny wouldn't have made sense. Fortunately I was able to squash all my physics woes on the train earlier so I can now post a belated day 2 update prior to starting on any of my intended day 3 goals...
[attachment=23879:day2 (start of day 3).png]
So, I now have units spawning, moving, bouncing and disappearing when they reach the goal. With gravity and collision detection/response all working correctly now (at least it seems to).
My goal for today is to get the rest of the crucial gameplay mechanics implemented, at that point I have the minima of an actual working game!