Trains.io 3D is slithering train game in 3d world. Become the grand trainin game by eating others and grow longer. Collect screws and toolboks to grow faster. Good Luck Trains.io, 3D train game, train growing game, slither.io, snake.io, train game, railway, 3D, grow longer, consume trains, screws, toolboxes, boost, mobile game, desktop game, competitive, online game, railway game, train tycoon