For you noobs complaining about money here is a tip.
Place money mushrooms (red, yellow) near where the path passes an area twice following damage mushrooms. Place damage mushrooms near the entrance and in areas preceding your money mushrooms.. Build up money mushrooms FIRST. Then build up damage mushrooms.
To start off I usually place one mushroom near the entrance and the second one near where the path passes twice. The second mushroom becomes my first money mushroom. The first tower becomes a splash poison mushroom. Be sure to check your combination list in the menu as you make new combinations to see what they do. Telling you more would be a spoiler. :)
Finally got to play. Giving this a 1 star. Not really fun when "pro" players join then abandon one when the going gets tough. The inability to connect to the lobby and having to reload the page here on Kongregate is just wrong. Fix it.
Gave 4/5 because it is silly to keep getting experience points and not be able to do anything more with them once everything is upgraded. I ended with well over 2 million useless experience points.
1/5 Only one shot per mob where no other tower can fire at it is a terrible idea. Also, mobs that can outrun one's shot is a terrible idea. Starting over the ground is blocked where previous towers were placed but no longer exist, terrible idea. Needs work.
1/5 'cause I need another point for leveling up. Played to level 6 or 7 (was so bored I just let the bad guys through). Only having archers and no way to heal them is bad. The game is repetitive and gets boring after a while.
1/5 I seriously dislike games that make me have to click moving targets to kill them. I already do enough clicking to get carpal tunnel syndrome without this excessive click fest.
An endless stream of some green things, a little tower fella that never sleeps and never misses, no score, no way to "win". Basically my computer is just playing with itself. Great game! (1/5)
My score was not recorded properly. Says I got 461230 on the "Friends" score list but I took a screen shot that shows I got 9,926,339. Quite a difference. :(
 "Mushroom Revolution")
 "Zombies! Apocalypse - MMO Zombies Massacre")
 "Epic war")
 "intrusion")
 "Age of War")
 "Easy Tower Defense")
 "Goblin Defence")
 "Big Maze Game")
 "Proxemia Future")
 "Defend Level 60")
 "tibia tower defence 1.0")
 "Attack Barack")
 "None 3")
 "Pervert Adventure")
 "Xeno tactic 2")
 "Anti-TD")