I've installed last night too... and totally hooked all ready.

a way to create and share levels sounds brilliant. ... I could see a real online community developing with hard levels created and challenges set by users.

Would be cool to save your solution to a level too, so other folk could see how you completed it.

That said - I love the simplicity and the fact that there is no scoring, so you simply have to complete a level and there's no worries about how you do it, or how many moves it takes you... so it's still fun to go back and do the same level and do it a different way.

some of the finest playability I've ever seen.