I am almost finshed with my Battle field just waiting to get the Digi combat battle field pieces.I made it out of 2" thick styro foam I had laying around the house .Then I spray painted it with Gray enamel and it gave the foam a textured look because it was not foam safe and melted the foam and textured the surface.Then I sprayed red stone over that and then black high light.Then the river was agua blue R/C polycarb paint it really dug out a river in the foam.I made a little cliff to climb up on and boarders so the tank would not fall off the battle field.I hot glued the whole thing together and also the HO train foilage.I t fits on my lap it is 32"by 24" weighs about 1lbs.I battle tested it with my nephews today it works great you can even shoot tanks down below you .It need some wall to hide behind because the nephews just keep hitting the fire buttons and kill you fast finnaly I got them to enjoy driving around these small marvels instead of just killing each other.At first they thought they had to move the stick really fast like a Playstation game.IT was fun alot of fun