Here are some, but they change monthly.

Hacksaw – Dark summoning 

Relax – Mega heist

Quickspin – Devour the weak

Thunderkick – Odin’s gamble 

Red Tiger – Gonzos MW

Btg – Extra Chilli 

Elk – Wild toro 2

Netent – Gonzos quest 

Yggdrasil  – Vampire riches 

Nolimit – DJ Psycho 

Pragma – Dog house MW