what would be an awesome upgrade system is that you get the 2 upgrade choices like in btd 3 and when you max both of them you get to buy the final super upgrade. perhaps for the banana plantation you could get a bonus when you pop a balloon completely.
lol this perfectly represents a Jrpg leveling up again and again battles happening dying and trying agin a story whith dungeons where you wake up wet and a game that you cant finish 5 stars
why do the 2 people one in armour with a mega axe and one with a staff introduce themselves as the toad brothers? good game i like the voice acting it is sometimes hard to find a flash game with creators that bother to do voice acting
good game upgrades for each unit might be nice but i also like the way its simple so dont put in complex ones. I also like how it feels realistic and the weapons are improvised so put in upgrades that relate to that feel. e.g instead of just firing speed upgrade put that it adds an auto reload to up firing speed.
the camera needs to move when you do because its annoying to not be able to see your target. it also could zoom out if your mouse went to the edge of the screen to aim furthur
the ai can be annoying when there appears to be no shot available and it spends 45 seconds circling a planet then when there is a move blows itself up in 4 seconds
sometimes there is a glich after you reset talent trees where the abilities don't look like they are locked and if you mouse over then the must have x points doesn't show up. good game apart from that