Sometimes, a game goes through such a metamorphosis during its development cycle that it's practically a different product from its original release. Thus is the case with Minecraft, a little old building game, inspired by Infiniminer and Dwarf Fortress, and created by Markus Persson. Whether you can only play it for fifteen minutes at a time, or end up devoting hours at a stretch (often unintentionally) to it, Minecraft is intensely enjoyable, and an incredible bargain. Minecraft Beta will be out on December 20th, so this is your last opportunity to get the game at Alpha pricing and with the promise of all future updates for free.

Physics-heavy, sandbox-style webtoys are loads of fun to play with, and Ha55ii's Powder Game has always stood as one of the best and most feature-rich. Version 7 introduces several new elements to unleash on your screen of chaos/coolness!

Isle of Tune is a fairly simple webtoy, with a mere six elements that you can control to create a variety of sounds. There's just enough tools available to let you create some rather intricate loops. The pre-made loops are a great way to get an island started, and the simple sharing system is good for spreading your island creations with everyone.

After an extensive beta period where the game moved from a download to a browser-based Unity3D experience, the 3D platform adventure game Atmosphir is open and ready for everyone! Fueled by user-created content, Atmosphir allows anyone to craft custom levels using a simple, thorough, and surprisingly fun editor.

Not a lot can be said without spoiling the fun of playing Srdjan Susnic's entry into our CGDC#8. What you should know is that ZOO Director is a truly traditional sandbox gameplay experience. Your aim is to rise above the rank of humble Zoo Novice to claim the glorious title of Zoo Director, by creating and maintaining your very own zoo. Sounds simple, but this quirky little game quickly reveals its challenges.