>>18498162I would use the L shaped half pace and spiral in a tower defence because the L shaped half pace is very good for projectile defence and the spiral for compacting the invading force into one enemy at a time. With either the L shaped half pace or spiral stair defence system in a tower defence scenario you can heavily rely on restricing enemy movement by deploying boiling pitch at the top of the stair, in the case with the L shaped half pace stair system which will give you direct access to the bottom of the stair case from the top boiling pitch can be thrown by men at the top to drop upon enemy heads at the very bottom or in the case of the spiral stair system boiling pitch can be encased into spherical ceramic pots and rolled down due to the nature of the spiral stair and with the help of gravity to collide with enemy feet and explode upon impact coating walls, enemies and of course the stairs themselves in boiling pitch and set everything ablaze. The other key factor of the L shaped half pace stair defence system as discussed in the beginning is in part due to the amount of area in the spaces of nothingness between the stairs themselves giving an archer ample coverage from the very top of the tower to the bottom, in contrast to this the spiral stair defence system has little coverage but is twice as deadly in my opinion because it is so compact and has little room forcing enemy invaders to sometimes walk one at a time or two abreast depending on the structural integrity of your tower's spiral stair case. The spiral stair defence system as discussed above can be deadly when deploying boiling pitch but its key feature would have to be trap deployment and forcing enemies into a bottleneck with pikes and crossbows ensuring the defenders are properly covered to limit heavy losses as sides can easily be reversed without proper attention to detail and poor planning.
