Algodoo

I used Paradigm`s box-mag using machine gun, combined with my Uzi model. I no-collided most of the Uzi so it wouldn`t mess with the working parts, so you can change that if you want. Scale it, and attach it to something. Load with left arrow, shoot with right arrow. When out of ammo, hold enter for a second to release the box. You should also download the ammo box for extra ammo, which I`ll put in responses. Drag or move the entire box into the loading mechanism (blue triangle), let the triangle fall over the gap, then load with left arrow. You can then commence 0wning some towers again.