In Summoner's Greed, the main objective is to defend your treasure from waves of heroes while collecting resources. You summon various monsters and strategically place them to fend off the intruders.

To upgrade your monsters, you need to collect enough resources like gold and special items. Access the upgrade menu from your monster screen, select the monster you want to enhance, and follow the prompts to upgrade.

Gems can be used to purchase special items or unlock new features in the game. Spend them wisely to enhance your gameplay experience, such as acquiring powerful monsters or speeding up resource collection.

To earn resources quickly, focus on continuously defeating waves of enemies and strategically placing powerful monsters. Additionally, participating in events or claiming daily rewards can significantly boost your resource income.

Unlocking new monsters involves completing levels and reaching specific milestones. Follow these steps: 1. Progress through the game and defeat enemies. 2. Collect treasure chests that contain monster cards. 3. Use the cards to summon new monsters in your roster.