The Christmas Game Jam is a once-annualy game jam; that uses one theme, Christmas. Anyone can create or submit a game as long as you complete your product within the 29 day time-limit.
The rules are here to keep the game jam fun, and fair, while still allowing people to have the same amount of creative freedom they would have on any other projects. Although, the administrators reserve the right to remove any game they feel doesn't conform with these regulations.
The theme is pretty simple, you must make a game that is based around Christmas, this can be a myth or something that actually happens on Christmas. Although the theme is already released, your game should not be worked on until December 1st.
Public domain, CC licenses are allowed to be used, as long as it is notified and told what the work is, and where it is used on the games page. This applies to sounds and graphics likewise.
Any free external libaries may be used for your game, engine like UDK and Unity3D is fine. While if you want to use pre-existing code, it must be made availble to the public before the start of the contest.
Your game will be rated in the following points:
Games are uploaded under the Attribution-NonCommercial-ShareAlike 4.0 Creative Commons license.