So if i base this off all the time i have spent playing
1. Age of Gods (only the original, god of storms can be decent but the original seems far beat the bonuses on any of the other just based on how many times it retriggers)
2. Koi Princess (I dont bet huge amounts have a very select limit as far as depositing so its a safe bet ill get some bonuses as well as features, money seems to go a long way on this plus the sure win free spins can CAN be decent)
3. Goonies (never had the red key, actually got the red beam on rick and morty wubbadubdub while waiting for this, same thing applies greeen keys kinda help carry the balance along for a while)
Also i liked Worms:Reloaded and
Hercules High and Mighty for the piller gambles when i played FOBTS