The TerraTech game is unique because it allows you to build your own vehicles in whatever manner you wish. You cannot let your imagination run completely wild because the game has limitations but it certainly gives you more creative freedom than any other game of its type. How you build your vehicles is up to you. Make them fly to get away from danger or make them fast to avoid danger or make them slow and powerful so they may take other players on without backing down. There are similar games where you may build your own vehicles in whichever manner you wish but there are few that are this well polished and this well executed. TerraTech has taken the MineCraft premise of open-world building and applied it to vehicles. There are other games out there that are similar to TerraTech but few of them are as consummate as this game few are as graphically pleasing and few have as many building options. As the game is updated and more downloadable content is created you should expect to see more and more imaginative vehicle builds.