Parents and Teachers: Use the coupon code "summerisclose" to receive 60% off (yes 60) your subscription to MrN 365 (https://mrn365.com). If you choose to renew your subscription after one year, you'll pay the same discounted rate.
This is a challenging game that traces the steps that both explorers attempted in their failed circumnavigations. Redeem your chosen explorer by successfully re-tracing his or her steps using your advanced world geography skills. Very challenging!