Iron Girl is a bitcoin casino slot game, led by our vigilante space hero and her trusty Iron Armour. Played on 5 reels with 20 paylines, help Iron Girl capture the wanted villains and collect the bounty. The bitcoin slots game includes a wild symbol (Iron Girl) which substitutes for any other reel symbol to help comprise winning combinations. On each spin, the best winning Villain symbols are held in place, along with any Wilds or Villain symbols that match the best winning Villain symbols (even if they are not part of a win), and a re-spin is awarded. Re-spins continue as long as Wilds or the Villain symbols that match the held Villains are added to the reels. Any Villains that are added, that match the ones held from the original spin are also held in place for the subsequent re-spins.