Offer valid on store.firaxisgames.com only while supplies last. Offer valid only on select Civilization game products and merchandise. Offer availability, pricing, and game formats may vary by region. Available inventory may vary by region. Offer does not apply to previous purchases, credits, or gift cards. Discount applied before shipping and taxes are added (if any). Offer valid from Friday, August 18 through Sunday, August 20, 2017, 11:55pm EST. EST is local time in New York City, USA. No rainchecks. Offer cannot be redeemed for cash. Dates and details of offer are subject to change and may be canceled without notice. Not responsible for any typographical errors, price variances or manufacturer delays. Void where prohibited or otherwise restricted by law.