Create bigger and better marble runs with the Techno Gears Marble Mania Accelerator 2.0 by the Learning Journey! This exciting marble rollercoaster set includes over 400 gears and construction pieces. Some of this marble run kit's new features include amazing jumbo marble run loop tunnel, flashing lights, multiple channels, 3D connectors to form real bridges for your marbles to go through and dual tracks, which allow more than one marble to be launched and marble races to be held. This marble rollercoaster construction toy also contains a power lifter that sends marbles zooming through your run. Techno Gears Marble Mania Accelerator 2.0 offers young engineers fun of two types b children can make their own marble run models and then observe their run in action. Children can tweak their rollercoaster in any way they want to after observing it. Techno Gears Marble Mania Accelerator 2.0 can be enjoyed alone or with friends and siblings. Children can race marbles down the dual tracks or just launch them. Combine this set with other Techno Gears Marble Mania sets from Educational Toys Planet for more marble run fun! Marble Mania Accelerator 2.0 requires 3 AA batteries (not included) and 4 button cell batteries (included). Colors may vary.