Hrumph.
Though I certainly can't claim any rights to the phrase "12 Days of Whatever," you caouldn't be anymore transparent if you tried.
Several years ago, I founded and ran the "12 Days of Atari" series of contests on AA. 12 days of contests that ran Dec 1 through the 12, building up to a grand prize on the final day. When I began frequenting DP more often, I brought the series here, running it for a couple of years as the "12 Days of DP Chistmas." Recently, GAC and others have run the contests here. The reason there was no contest this year was due to the unfortunate downtime. Nice to see you ripping off the concept and name - er, I mean - picking up the ball.
And the trivia game you mention? Jesus, don't you have a single original idea? Yet another concept of mine ripped off: The Game ON Retrogamer's Trivia Game was released at CGE 2003. 1,500 trivia cards on games from the 70s, 80s, and 90s. We sold 1,000+ of these retro videogame trivia games over the last 4 years.
And unlike the 12 Days contests where all I can do is shake my head sadly and say "tsk tsk," I *will* be watching your trivia game release as I am creator, designer, and author of the original game with all rights that implies. Steer mighty clear of those muddy waters, or - better yet - come up with an original idea rather than ripping others off. Namely me.