World of Goo developer 2D Boy is celebrating the game's first birthday by offering it for a reduced price.
In fact he's offering it for whatever price you want to pay, even if that means a single copper penny. The game normally costs $20, but you can pick your price until 19th October by visiting the 2D Boy website.
The deal covers the Windows, Mac and Linux versions of World of Goo. It's also available on WiiWare and in development for the iPhone.
Our reviewer liked World of Goo so much he awarded it 9/10. Read the full article to find out why it's worth more than 1p.