Here are the left and right parts for the bottom
spikes. They will smooth things out and look good
(spikes are intended to be used with those). This will
need some changes in the way the level generators work,
when someone is ready to work on this, I'll upload the
sides for the left, right and top spikes.
Note: all the spikes can be randomly animated, they do
not need to be synchronised and will probably look
better while not synchronised :)
Left and right parts for spikes_bottom