Theย Boiler Room Bonusย is activated by three, four, or five consecutive landings of the gold coin bonus symbols anywhere on the reels. You can select four items out of a total of 12, each of which conceals a different prize or additional feature. You will find 2 features:
- Free spins
- Reactor Bonus:ย until the round is over, keep selecting symbols to win rewards by exposing two malfunction symbols.