Use a Limited Mars Casino Bonus Code for 20 Extra Free Spins

Just copy this limited Mars Casino bonus code and grab 20 free spins on Event Horizon the anniversary of Opportunity’s landing on Mars!

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14 years ago NASA’s Opportunity rover arrived on Mars. To celebrate this great anniversary, Mars Casino has released a limited bonus code that will unlock 20 extra free spins for the usual welcome package.

This is the perfect day to get a Mars Casino membership as there are 20 extra free spins to grab alongside the usual welcome package. Use the MER-B20 bonus code to unlock the additional freebies on the Event Horizon slot. Please keep in mind that this offer is available for new players only, as it is an amendment of the 100% max. €100 + 50 free spins welcome package. Register, use the limited Mars Casino bonus code and enjoy the additional free spins!

For general information, check out our latest review about Mars Casino!

  • Limited Mars Casino bonus code
  • Collect 20 extra free spins on the Event Horizon
  • This bonus is part of the welcome package
  • Bonus code: MER-B20
  • Only new players can apply!
  • Valid until January 26th; 18:00 (CET)

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