It's late, and I'm tired. 2.30am and for better or worse I've just put up the new version of Putty Puzzle. It has:

- 18 Levels - 6 of which are optionally tutorials (frank will help you out if you ask).
- Instructions Page
- Lots of bug fixes
- Some usability fixes
- A few new level features
- Undo during the level
- Undo, restart and quit visible options

No apologies for bugs and/or typos. I've still got a lot of work to do. Thanks to the people who contributed levels.