Project Zomboid is an upcoming zombie-themed survival/RPG that's now available for preorder which will be playable as a standalone game for Windows, OS X, and Linux, as well as in a browser. The Project Zomboid Website has media and further details, saying a playable demo should be released by the end of this month. Word is: "If you think it’s a bit cheeky us asking for pre-orders / donations before we even have a demo out, then we kind of agree, but we really had no choice. Please read a bit of history on why we needed to do this. It wasn’t our original plan and we understand why people would be apprehensive or cynical about it and we understand if it’s something you personally are not comfortable with, and look forward to you seeing the demo when it’s released." Thanks Reddit.