• After you clear 61 stages, the royal roulette wheel feature unlocks.
• To activate the royal roulette wheel, you must clear 10 stages or 10 rounds.
• The royal roulette wheel is twice as effective as a normal roulette wheel.
• If you fail or quit a puzzle, the royal roulette wheel resets, and you must once again clear 10 stages or 10 rounds to activate it.