Crayon Physics - For people who like World of Goo

http://www.crayonphysics.com/

This is a great game. It's made by Kloonigames and is a puzzle game, where you have to roll a ball into the target using lines which you can draw with the pen. It seems simple but some of the levels are very clever, and then there's lots of stuff to complete, such as levels where you have to comeplete it using one line only.

It's on a donation/download basis until the 15th of Jan, dunno how much it'll be afterwards but I doubt it'll be that cheap, so play the demo, see if you want it, talk about it here then donate and get it or don't donate if you don't like it!