Puzzle works with a JRE 1.5 or higher.
Every version should work on any operating system : 
Java Web Start Installation
If you dont want to download anything, if you want an icon to be created on your desktop, if you don't want
to handle updates, This installation is for you.
JWS Install use a Snapshot version.
...Coming soon... 
...Coming soon...
Official Release
No Releases are available.
The first release is planned for end summer 2008.
SnapShot Downloads
Snapshots are not official version, they can be updated weekly or monthly depending on the project roadmap.