Ignoring all the terrible slots out there, the one that utterly brains me is Danger. If it wasn't for how features and decent wins I see others getting on it then it would have taken a permanent place on the banned list a long time ago!
Regularly seems to take over 1,000 spins to bonus... well over 2,000 when I left it autoplaying yesterday and I'm still to even get close to a 100x hit. The last 4 bonuses combined (excluding trigger win) have gone for less than 10x and only one of those involved the skull (J and Q the other 3 times).
But... it's due, right. So the grind continues :)
Aztec gold megaways for me, seen massive wins on it but none for me yet.
Also razor shark love playing it and will continue to but nothing above 100x.
Recently cracked my Reactoonz curse hit 1600x on 20p and 1620x on £1.60 after nothing from that for months.
Legacy of Dead. I love Book of Dead and Rise of Merlin so the game is right up my street. It's evil though! Takes ages to bonus for me and when it does it's rubbish and does not retrigger. I only try 50 spins at a time now. It's rinsed good balances many times.
Reel King owes me about 800