World of Goo is one of the most fun games you will ever play. There's a free demo available on Steam, and it's worth the minute or so it takes to download. 2D Boy has been generous, and included the full first chapter in the demo! Players should immediately buy the game if they have money on hand. That is, unless they don't like the taste of goo in the morning. But honestly, who doesn't? The goo balls taste amazing, and if I were a food reviewer, I'd give the goo balls a nine out of ten.