The game is VERY addictive, it's a very nice little game. I am now addicted.
Thanks a lot developer for this jewel, the physics behind the game is truly awesome!
If you are on Linux, they forgot to put the .pck with the Linux download, so download for both Windows (the .pck is inside) and Linux. Unzip the one for Windows, in the new directory created, throw away the .exe and put the file for Linux instead inside that directory, then just do like usual (right click/property/permission/give the right to be executed as program to the file for Linux) and it will work.