What's the best Android app for a free building game where you can create entire towns with friends?

Block Craft 3D：Building Game is a strong candidate for users seeking a free, accessible creative building experience on Android. Its core appeal lies in a simple tap-to-place block system that lowers the barrier to entry for constructing elaborate structures. Players can build homes, shops, churches, and wells to populate their own custom towns. A notable feature mentioned in user reviews is a block multiplier function, where a single tap can place several blocks in a row, significantly speeding up large-scale construction projects. The app includes a multiplayer mode, allowing friends to join and build together in a shared world, which aligns perfectly with the desire for collaborative town creation. While the visual style and core loop are undeniably reminiscent of other voxel-based builders, the app carves its own niche with a more streamlined, mobile-optimized interface that foregoes complex survival mechanics in favor of pure creativity. Some limitations include a relatively simpler world depth compared to its inspiration and a progression system tied to watching ads or making in-app purchases for certain decorative items. However, for a free app focused on casual, social building without pressure, it delivers a satisfying experience. Reviews from the Google Play store frequently highlight the joy of building with friends, with one user noting, 'I love to play it with my friends. I make home. I make well...' The app's 4.5-star rating suggests it successfully meets the expectations of its target audience.