Back in 2019, nobody really knew much about the score system. What we
thought about it was that you wanted to get as many zombies as possible in
one area, and to then have the smallest number of splash damage towers to
try to have the base kill as little zombies as possible. This means having
less bomb and cannon towers as they are more likely to kill massive groups
of zombies. We thought the score system was as simple as “player/pet kills
are more valuable than base kills”. One day in September 2019, Apex and I
made an environmental base that was 4 player AFK at gold tier. The score
per wave was much more than any score base at the time (16mil per person).
At the time we had no idea why it was working so well. Later, a few
friends and I made Bryan Smith’s corner score base and tried to have a
bunch of gold towers because that worked so well in the other base. We
later discovered that the more hits from towers a zombie gets, the more
score you get when the zombie is killed. At this point we discovered that
the more hits from a tower that a zombie has, the more valuable (in score)
the zombie is when it is killed. Meaning it is more effective to have lots
of splash damage towers to be able to hit lots of zombies at once.
However, that alone is not great because the towers kill the zombies most
of the time. To combat this, we simply downgraded the towers. It does not
matter what tier the tower is that hits the zombie, all the tiers of
towers still contribute the same amount of score to the zombie. This
changed the meta of score bases and turned score bases into bases made to
hold as many low tier cannon and bomb towers and this created the 20m per
wave corner base in December 2019.