I've compiled the latest OpenTyrian (old school vertical scrolling shoot 'em up from ye olde DOS times) using vanfanel's SDL with dispmanx support.
The Image is booting very fast although it's NOT created with rpi-buildroot.
I've used the normal raspbian kernel and copied the needed files from the normal raspbian installation while using busybox as init system.
Thanks to gamaral and his Marshmallow Entertainment System for script ideas.
https://drive.google.com/file/d/0Bxvn4Y ... sp=sharing
Source and normal raspbian tar.gz availble on request