Awesome, I came here looking for this info.

I'll see how well (or not) it prints on my Micro 3D.

If you need or want new designs tested, just let me know I can do a quick print and send you pictures or even completed prints if you want.

I forked the space invaders demo and added joystick support. 

https://codebender.cc/sketch:100732

It's mostly just pieces from two demos smooshed together now but I hope to flesh it out a bit (multiple rows of baddies, make them move, etc)