In Chrononauts, you are a time traveller and trying to patch holes in time. Play cards to flip Linchpins (critical points in time) which would cause a ripple effect. Avoid the assassination of John Lennon which in turn, became a senator and passed a law to remove the prohibition of marijuana usage. If the timeline matches your ID, you win. Collect artifacts and if it matches your mission, you win. When there are paradoxes in time, fix it to get more cards. When you fix enough paradoxes, you also win.
Game Days are the first opportunity for you to play Standard on a global scale with the newest cards. Standard - swiss format, DCI sanctioned, with top 8 players play-off.
$4 entrance fee. Number of players equals to number of packs as prizes.
Every participant, while supplies last, will receive an Avacyn Restored promo card. The Top 8 players also each receive an exclusive full-art prize card, after the swiss round.