Haha!! Awesome man!!
About DEF tower this a simply and nothing spacial?right?
I think yup...
But this game very addict after you know HOW TO MIX JEWEL!!
You can fix jewel to get a awesome skill!!
EX.+50%Fire/Ice/Thunder atk(and -25%from other element),
splash,3Xdammage,Slow,Get more money,Poison,Freeze,
Get back to swarm point(Love this),etc...and More.
Yellow mushroom have3slot very useful and make variety skill.
EX. 3color of jewel instant death.
and other I can not remember. --*--
Try it by yourself dude!!
and about red mushroom is powerful but it has 1slot we not need it too much.