consider an air unit with 73347 hp (what's flying across my screen now). with three maxed out ballistas in its path you can hit it 73 time while it's on its way. but it's still kind of boring -- and at the beginning of the game the balance is wrong.
lvl 3 lightning tower isn't worth it (but it'll cost you 4000 to find that out :) ), just plant four of lvl 1 things side by side for better damage and stun rate.
targeting seems pretty haphazard, too. does a tower pick a target and fire on that until it goes out of range? i regularly thought there were better (ie. weaker or further along the path) targets to pick out.
money seems skewed, especially in early levels. and since you get fliers early you have to cover the breadth of the screen with arrow or ballista towers. costs a lot; seems like the best coverage is 5 arrow towers aross, then upgrading them all once (cheaper than placing more towers for the same damage).
Gave it a 4/5, but having played for a long time (now on lvl 110) I'm beginning to wonder whether it does have replay value. Is there an end? It seems like there's the same basic half-dozen levels repeated endlessly; it turns into something like onslaught 2.
just mostly boring. click on one of three shapes, click on similar shape moving by above. no idea what the levels do or mean; no sound; scores basically random (depending on the distribution of the shapes that show up, which determines how many you have to discard before filling in the last greyed out shape above).
absolutely an interesting research project, and i'd be interested in the publications that come out of it. but not a fun game. on the first question i got the only twp movies i even had heard of were Jaws and Waynes World -- ok, i'm not a moviegoer. *can't* play this.
is there any point? any limit to how big the water blob can grow? it seems like grey blobs (buckets of water?) appear faster than the blob evaporates, just it's just a timewaster of "move mouse to grey blob, move to center of screen, hold space a while."