Pan-America Shadowverse Open May Cup is one of the Monthly Cup tournaments. Day 1 of this online tournament is conducted in a Swiss draw format. 

The top 8 players move onto Day 2, contending for a cash prize in single-elimination matches. 

The two players who have accumulated the highest league point scores from January to September advance to the World Grand Prix. The Monthly Cup champions from April to September as well as two top league points earners will compete in the PAM Contenders Cup.