More suggestions:
Wheels of Rock(might have bonus buy)
Supertracks Railways (bonus buy)
The Magnificent Super Slice (bonus buy possibly)
Loaded(pick 12 spins) old slot but can actually pay big.
Lucky Firecracker
Scudamore Super Stakes bet slip on right hand side (if you get free spins pick divine fortune or Berry Max)
Fruit Case(bit like gonzos quest)
Oriental Prosperity(similar to megaways)
Flirting Scholar(a knockoff version of gandalf) 22,500x max win.
Cash of Command(someone requested as cash command they missed the of)
90k yeti gigablox(think it has bonus buy) very high volatility
4 fantastic fish
Good Feathers(gamble for top as impossible to get the max win from other bonuses)
Invaders Megaways(lots going on in base and free spins) Free spins on this is awesome.
Fortune Tellars charm 6 (a copy of luck ladies charm but way easier to bonus)
Baboon to the moon(had £625 on 25p before in one spin! during feature)
Silk Road Riches(4 spins x3 if you bonus it)
Five Pirates
Joker Maxima (pick high variance spins)
Scroll of dead
Ghost of Dead
Prism of Gems
Xmas joker
Secrets of the Amazon old game but, can pay massive
10,001 nights megaways(i prefer non jackpot but you can play either)
cluedo mighty ways
Santa Express(activate bonus bet, might have buy)
Lava Lava
wilhelm tell (take 1 spin x50 if bonus)
Coba
The Good the bad and the Ugly (not superslice) take “the bad”
Fury of Odin
Caishens Cash
There that is plenty slots to use for requests 🙂