Casket of Goo

In case you haven't heard of it, World of Goo is the hit indie game of the year. I'm about halfway through the game and having a blast.

http://store.steampowered.com/app/22000/

15 bucks isn't bad for this one.

Overview: The game is built around the idea of creating large structures using balls of goo. It is based on the prototype game Tower of Goo developed for Kyle Gabler's rapid game prototyping Experimental Gameplay Project. The game is divided into five chapters, each containing several levels. Each level has its own graphic and musical theme, giving it unique atmosphere. There is also a bonus meta-game called World of Goo Corporation, where the objective is to build the highest tower using goo balls which the player collected through the course of the game. Players from all over the world can compete, as the height of the tower and number of goo balls used are being constantly uploaded to the 2D Boy server.

Objective: The main objective of the game is to get a requisite number of goo balls to the pipe representing the exit. In order to do so, the player must use their various abilities to build bridges, towers and other structures to overcome gravity and various terrain difficulties such as chasms, hills, spikes or cliffs. Extra Goos recovered in the pipe are pumped through to the World of Goo Corporation, a sandbox area where the objective is to compete with other players worldwide by building the tallest tower possible. Players can also try to achieve the "Obsessive Completion Distinction (OCD) Flag" for each level by completing the level under more stringent criteria, such as collecting a larger number of Goo balls, finishing under a set amount of time or using as few moves as possible.

Levels and chapters in the game are interspersed with cut scenes. There are many types of goo balls in the game and each of them has unique abilities. The player needs to exploit their combinations in order to complete each of the levels. The Wiiware version includes multiplayer with up to four people on the same Wii.

Levels: The overall World of Goo is split up into five chapters, each containing a number of levels. The chapters are set over the course of a year in the World of Goo. Each chapter takes place over one season beginning in Summer and ending in Spring.

The other selectable 'chapter' from the main menu is the World Of Goo Corporation. Goos collected above and beyond the required amount to pass a level are piped out of each of the played levels to here. Starting from just a single triangle of Goo, the aim is to build the highest possible tower. The Goos in the World Of Goo Corporation are very similar to the Ivy Goos, in that they can be repositioned; however, they are black, and can only form two connections at a time, as seen with the Common Goos. In the World Of Goo Corporation, towers built by other players of the game are represented by clouds bearing the player's name, nationality and height of the tower, including details on the total number of balls collected by the player and how many were used in constructing their tower. The altitude of each cloud represents the height of that player's tower. An online leaderboard charts the heights of the top 50 towers, as well as the top 10 players for each level of the game.

There are a total of 48 levels in the game, World of Goo Corporation included.

In an interview the developers stated that the retail version released in Europe will receive an additional sixth chapter, set on the Moon. Few details were disclosed, but reportedly this chapter will feature a freeform sandbox mode, similar to that of the World of Goo Corporation. This was then canceled for Wii when 2D Boy announced they were releasing the game on WiiWare in Europe.