While playing DOTA, my friend and myself have tried to advance to
the enemy base via the middle lane. Why the middle lane? The middle
lane, primarily because it offers the shortest distance to the
enemy fortress.
However, I noted the following problems:
1. In a game with 4 or more players on both sides, 2 enemy heroes
will more down from the middle lane.
2. The spirit tower is located in such a way that it is not
intuitive for the allied creeps to attack it; they have a tendency
to chase the enemy hero/es and bypass the spirit tower.
3. The spacing of the spirit towers are such that there is not
reaction time to amass the allied creep forces.
I shall further elaborate on point 3. With some effort in
Operational Research, one will realize that if one focuses on a
particular corridor to a certain depth, one will be able to amass a
few waves of creeps, to the point that the creeps will have a
certain momentum. This mass of creeps will be able to destroy the
enemy's single creep wave and then reach all the way to the final
spirit tower. This strategy can be effective only if the first two
spirit towers are being destroyed.
However, if you consider the placement of the spirit towers, the
southern corridor is such that the spirit towers are deliberately
placed further away from the allied's point of view. As such, there
is a higher chance to allow the creep wave to flow through. This
allows a better build up of allied creeps, and hence with time
gives a better chance to push through the final spirit tower and
then one can start working on MEGA Creeps.
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