Upgrade system is so vague it doesn't work. Targeting is a joke. Towers miss targets consistently. Range info is inaccurate. This needs a negative score.
The trick to the damage and range buff towers is this, first build the towers you want and fully upgrade them, leaving a space where your buff tower will be, THEN build and upgrade the buff tower.
Verynice to see a good old school TD. Has tons of things absolutely right, the only complaint i have is the monetary system needs to be updated a bit. Getting 1-2 bonus gold post wave 50 is like a slap in the face. Also for the extreme /armor/regen/boss/ monsters, the gold needs to be upped a bit OR lower tower upgrading. When a full wave of 10 monsters only gives 200 gold and your next upgrade is 200+ gold, you literally must do 2 waves an upgrade. But HP and armor seems to be going up every 5-10 waves. You can't get a great or decent score beyond easy due to the monetary being off a bit.
Wow the lag on this game is ENORMOUS. Don't bother telling me I have an old weak comp. I got a 28mbs net 8 gb ram 1.5 tq hd with nvidia 550gt vid.And this thing LAGS hard.
Lvl 25 on limitless is the 9,999 bunny wave. At current standards I have not found the right position to defeat all of it. Expect pure purple, can cross 3/4 of the board invincible bunnies. Good luck.
Ok the game is all about WHERE you put turrets. The no upgrades and max limits on turrets detracts from play big time. Half the turrets are " hope n pray " they hit something.