quite good
Nice variation of the defend your castle genre.
-Graphics are alright, sure there could be some more variation but still, pretty good. I also kinda like the Flak-puffs.
-Style... well, its a dyc-clone, but as I said in a cool new way.
-Sound: effects and music are ok and all, but theres only the flak-explosions as effect and only one backround music, so after a few lvls it gets kinda dull. at least include an option to toggle of music but not the sfx.
overall: pretty nice game. On a side note: it's called flak, and on another side note: screw rocket launchers and emp's, build 8 flak guns, then upgrade radar and then pump dmg, fire rate and speed upgrades. certain victory on all difficulties. dont push bullet speed too far tho or your flak-tanks range starts outside the plane spawns and you get overrun ;D