It doesn't feel finished, nor polished. Not even after six years. There's hardly any conveyance for the player to grasp a sense of progression and it takes less than 2 hours to achieve most relevant things in the game save perhaps the boss battles that hardly even matter anyway. And sure, building is fun, but not as fun as it should be when the game doesn't test the worth of your building skills. In fact, the only value your builds have is purely subjective and set by the players, because the game doesn't reinforce it's own qualities. If voxel based builders are tools to create art, then Minecraft is equivalent to Microsoft Paint, and we're in a long road to reach something on the level of Adobe Photoshop.
Alternatives: Dragon Quest Builders, Terraria, Starbound.
Score: 3.0 (Bad!)