Objects are in all levels in city siege 1 and 2, here are some types:
Objects[]
Ground[]
The ground in the city siege games is an indestructible thick object which is always needed.
Thick objects[]
Thick objects are destroyable things used for walls, floor, and cover, if being hit by falling thick objects the unit will lose health.
Thin objects[]
Thin objects are destroyable things used for walls, doors, windows, and hiding things.
Explosive objects[]
Explosive objects are explosive items that can be blown up with bullets, falling, or other explosions, these objects are thin objects except the spy´s time bomb, or bombers time bomb, the other objects are: oil barrels and gas barrels.
Props[]
Props are destroyable objects such as signs, cars, bikes, and sandbags (spiked or not spiked). Some Props can have civilians and baddies on it, including your units.