MrSlotty

You get:
270% deposit bonus up to $20,000

You get:
100% deposit bonus up to 500 EUR
Daily Giveaways & Cashback, and if you manage to join their VIP Club, you can expect to get even more lucrative bonuses

You get:

$0.02 BTC No Deposit Bonus + 150% deposit bonus up to $1,050

You get:
300 Wager-free Bonus Spins

You get:
100% deposit bonus up to 5BTC and 100 Free Spins

You get:
Get up to 50% commission back on every bet you place

You get:
200% deposit bonus up to €300