Builder base expansion idea.
What about an additional new path or boat that takes the builder to mysterious new place? It could be a land or a cave (even better) that is totally dark until he explores each part of it. Once explored, that part stays lit. He could discover new building materials to bring back and make buildings stronger on both builder and home bases. There could be twists and turns and dead ends. He could also lose what he has discovered—either by having it taken from him by strange creatures or people—or by falling into traps, natural or otherwise. Once back at the builder base, he could use the new materials to improve buildings there or take them on to the home base. Finally, he could use them to build a magic tower or castle that would symbolize the apex of the builder’s glory, ending his role in the game. He could be immortalized on Hall of Fame plaque and all his loot transferred to the home base. What do you think?