From the announcement:
Summon monsters and cast spells as you attempt to defeat your opponent in an all-new way to duel! The Yu-Gi-Oh! Dice Masters: Series One 2-Player Starter Set is the latest release of the all-new Dice Masters game. This innovative collectible release will be followed by additional expansions so players can increase their Dice Masters collection!
-44 Custom Dice
-Two Dice Bags
-Complete Dice Masters Core Rulebook
-Everything two duelists need to play Yu-Gi-Oh! Dice Masters!