Amazing game! i have spent at least 48 hours of gaming time on this game so far. I have one request. Please, add selective fire and auto fire toggle for each weapon. I love to use the 6 rocket launchers but I waste more rockets then I hit targets with.
Couple of bugs:
1) If a unit is on fire and you pause, the fire damage continues to damage the unit.
2) if you kill a vehicle unit at a corner, the driver runs off the map instead of following the path.
couple of comments on the towers:
1) I would increase the cost of the upgrades as you progress closer to 5 stars.
2) the missile tower seems to be worthless since the missile self destructs if the target is destroyed. Maybe have the missile find a new target instead?
And a comment on the skill tree:
It seems a bit to easy to get skill points. I can max out the skills by area 8. Maybe, increase the cost of the skill as you get closer to max?
Otherwise, great TD! I really like the flow and skill upgrades. The fact that it is a benefit to go back and beat the areas again, to gain more skill points is great! I can't wait for the end product!