After a request in this forum that mentioned a IPhone game called "Falling Balls" and a look at a video showing the game in action, I thought it was simple enough to be ported to WindowsMobile.
You control Billy, the poor haunted man by tilting your device and should guide him as long as possible through all those flying balls without being hit. That's all about it - have fun and enjoy!
Edit: most recent version 0.4
can be found here.