That's why i am active on twitter for most of the time or you can say check twice in a day to follow some new updates which help me to grab the early opportunity.These big wins are shared almost daily as some lucky players are coming out regularly with these sort of wins shared by Roobet then.Have followed the account on twitter and have notification on for the same to check if something important comes up.
I understand why so many people show interest in these giveaways, contests, games etc, but the truth is that the chances of winning them are slim(If the numbers are big) just like jackpots, raffles etc.
The various contests and games in the games and rounds section of this forum provide better odds of winning if you ask me.