Yes I think its too late to enter now being that the contest has started already.
But there should be another one coming up soon. PB will announce whenever there's another
one. Right now we waiting for the winner announcement which should be around midnight.
We accept entries into the contest right up until the game starts, which is 7 hours from now. If anyone has still not joined, you still have a chance to win 2 TH/s!
Join here:
https://bitcointalk.org/index.php?topic=631472.280