There are many issues with this game...
The range of the weapons is effectively unlimited, but you get no idea on which is the engagement range.
No idea on what's the "size" stat. might be the turret's engagement range.
The support figthers are hardly any use unless you are facing the bigger and slower enemies.
Once your turrets/figthers lock onto an enemy they keep on shooting at it until it is destroyed - no matter if they can hit it or not.
No idea on what the upgrades are for. It seems that for the small/large turret it increases the turning rate. No idea if the damage and range increases or not.
No matter what enemy you destroy, you only and anyway get 100 money to spend (I didn't go past wave 18, might be wrong). You don't get enough money to spend for defense and shields/repairs.
All in all, the idea is not bad, but it still needs a lot of scrubbing to be enjoyable.
Forgot... dead enemies still block the arrows until the blood pool disappears, and the vision range isn't how far the tower can shoot but how far it will start to shoot. The arrow will continue travelling and hitting enemies past that point
Wave 44 and counting.. a wall of red towers that can annihilate everything on the other side of the screen. Chuck Lee tower doesn't work.. still much work to do, and especially polish
 "Tesla Death Ray"){kind=icon}
 "Bombardment"){kind=icon}
 "Space Base Defender"){kind=icon}
 "Castle Front"){kind=icon}