S.T.A.L.K.E.R.: Shadow of Chernobyl
THQ ran a competition in January 2007 offering the lucky winners the chance to play the beta version of S.T.A.L.K.E.R, in a 24-hour marathon session. The event, scheduled to take place on the January 24 2007, was subsequently changed to a 12-hour session days before it was supposed to occur.