MEPIS 11 Community Repo: The WxSand Thread
This is a wxwidgets C++ clone of a popular Java applet. You have a "world" with various falling particles of different composition and behavior---the goal is open-ended. Maybe to set up self-recycling or steady-state Zen gardens; whatever you like is fine.
It was mentioned as having no deb packages for Linux at all on the Debian forums, and I could not find any, so ours may be the first ones. It appears on the menu under Games: Tactics and Strategy, and the binary file in usr bin is "sand".
Look for 8.5 and 8.0 packages coming up.