In the winter I made a basic engine for a 2D 'pengo' clone.
It's not finished, only sliding an crushing will work, the enemies are not so smart.
It's downloadable on my site: WAIT 20 seconds.
it's the zip file. please let me know any problems. (it will give a texture error, just press ok).

http://members.lycos.nl/marminnetje1/index.html