Yes, it happened. I tried several strategies – from classic catch-up to the Martingale system. In slots, of course, this is almost useless, but in sports or eSports betting, they sometimes give results. The main thing is not to expect miracles. The strategy works when you are disciplined and understand what you are betting on. Recently, on one information resource, I found https://el-greatwin.com/ an interesting analysis of strategies specifically for GreatWin. It describes how to use bonuses and free spins wisely – especially for new players from Greece. By the way, with the right approach, the welcome package from GreatWin can really be played with a profit – especially if you apply limits and adhere to the bankroll management strategy.