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This is a paid asset, but now you can download Iron Spears Free.
Iron Spears v1.1
This pack contains six armored vehicles. Wheels and turrets are in separate mesh layers for animation / rotation.
Textures contain diffuse, specular and normal maps.
Added prefab versions with blue lights on tanks to use them in night scenes.
Added 3 rock models to decorate scenes.
Each tank vehicle is 4K polygons with 2 LODs. Each vehicle have 3 materials, separate material to animate tracks, body and turret.