with a fast forward button, fullscreen and MOST IMPORTANTLY a complete review (or removal) of the energy system, this would be a solid 5/5 and possibly game of the month. nobody wants to wait a hour for five minutes of gameplay. 1/5 as it is right now
When you're playing in single player, with bots, after some time the game glitches out and you have to refresh the page, it keeps saying "Round Draw" everytime you start. Otherwise it's the best browser-based game I've ever played. 5/5
upload BTD5 here and u will win weekly and monthly contests for sure!
for those who havent played yet: http://ninjakiwi.com/Portugues/Games/Tower-Defense/Play/Bloons-Tower-Defense-5.html