Dingo Games (http://www.dingogames.com) has released Tasty Planet: Back for Seconds, an US$19.95 game for Mac OS X and Windows systems. In Back for Seconds players control a ball of goo with the ability to eat anything smaller than itself. The more it eats, the bigger it gets. By the end of the game, players are able to eat the entire world (and more).
Here's how the game is described: "Tasty Planet: Back for Seconds is the sequel to Dingo Games' well received original game, Tasty Planet. As with any sequel, Back for Seconds has quite a few improvements over the original. Levels can now span vastly different object sizes; players can grow from the size of an amoeba to the size a galaxy within a single level. The game also adds a two player cooperative campaign mode in which each player controls their own goo. This mode is local only, so you'll have to huddle around the keyboard to take advantage of it...| Read more »