The mystery block is a added on july 1st, 2018. it is by default a bright cyan block with a question mark, which is also solid. the block has special abilities depending on its color. the block is initially activated by clicking it (except for the mystery block in the box quest, which is.... Check out ️build a boat for treasure ️. it’s one of the millions of unique, user-generated 3d experiences created on roblox. build your ship and set sail for your adventure! liked the game? don't forget to leave a thumbs up(