World Of Goo

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Not a very enticing name for a game dont you think? Anyway, World of Goo is a physics based puzzle / construction game. The millions of Goo Balls who live in the beautiful World of Goo don't know that they are in a game, or that they are extremely delicious.

Although the game can get extremely challenging at times, its surprisingly fresh both in terms of graphics and gameplay. It has a Windows, Mac as well as a Linux (yeah!) version. Mind you though, this is a closed-source game (albeit it uses many open source elements). Also, its not a free game, the full version of the game costs $20. However there's a demo version available on their website which is completely free to download. Hence, you could give it a try before you decide to buy.

Official Site of World of Goo : www.worldofgoo.com
Download links : www.worldofgoo.com/dl2.php?lk=demo