GitHub's annual Game Off returns in November, inviting participants to create games based on a secret theme to be announced on November 1st. This year's event is more inclusive, allowing submissions for any platform, operating system, or device, unlike previous years which restricted entries to web-based games. The use of open-source engines, libraries, and tools is encouraged, although not mandatory. The competition has a history of impressive entries, and the organizers are eager to see what participants will create this year. The official hashtag for the event is #ggo16, and the announcement was made by Lee Reilly, Senior Program Manager at GitHub Developer Relations.