The overall jackpot is pretty big "€ 5,558,309", I wonder if how will the users will take part in it in order to have a chance in winning the jackpot.
How to have a chance to win jackpot? Simply play the slot game with the jackpot.
About how big is your chance to win jackpot, you need to check the game with the jackpot.
Check how the jackpot works on the game.
I am a little curious with your welcome bonus, there are two type of percentage aside from the 2nd one. The first is 100% up to 500€ and the third one is the 50% up to 350€. Will below 350€ first deposit will fall to 50% welcome bonus and only 500€ deposit will receive 100% welcome bonus?
It is "up to", logically any amount under 500€ will receive 100% bonus unless there is a minimum amount requirement. The same applies for the 2nd one.
I think that for jackpots you need to play with max bet! I am not sure, but for some slots that I played it was like that! Here on Winnershall jackpots slots are from betsoft, and I like betsoft slots. They can be so generous sometimes if you hit a bonus round and have luck, at least I had some amazing wins on greedy goblins, charms & clovers and mr. vegas.
Nice site, I will wait for some special promotion for bitcointalk members before I try it. Or even better contact Efi
https://bitcointalk.org/index.php?topic=5262141.0, and some of us will follow! Good luck!