First look: "Goblin classes"

Goblins go out and raid to improve their goblin den with gold. As the castle improves, new NPCs are introduced to join the den. These NPCs will provide services for the Goblin King and upgrade the player's items. The player characters can do chores for these NPCs and in return, they gain permanent “class” features. It creates a game loop of adventuring to find gold, then improving their home base through tasks and roleplay, which results in the goblins having better tools for adventuring.