21 Monsters is a multi-faceted gamblified battle game prototype driven by the mechanics of Blackjack (21) familiar to many gamers, and leverages Gamiker's patent pending “Action Card” system. The title features tanks and futuristic mechs dueling with various giant monsters assaulting cities around the world. Players have to fight monsters through multiple rounds of their blackjack hands, while earning medals and requisition enabling them to collect new units to grow their powers and abilities. The goal is to defeat the monster before it does a certain amount of damage to the city section. Player may also employ Boosts and World Abilities which can be purchased in the in-app store for use during the battle. Depending on the legal territory, players may use virtual or real currency.