Gun Turrets fire a stream of projectiles at enemies. Each level increases range, damage and health. It is the basic defensive turret that is cheaper to upgrade, but has no special attack bonuses.
See the upgrade screenshots here
Building Stages
Stats
Level
Attack
Health
Time
Range
Rate
Targets
1
60
300
0
100
0
0
1m
250
30
1
2
70
480
500
500
0
500
2m30s
275
30
1
3
80
560
1,200
1,200
0
1,200
6m
300
30
1
4
90
640
3,200
3,200
0
3,200
16m
325
30
1
5
100
720
8,000
8,000
0
8,000
40m
350
30
1
6
110
800
20,000
20,000
0
20,000
1h40m
350
30
1
7
120
880
50,000
50,000
0
50,000
4h
375
30
1
8
180
1,250
3,000,000
3,000,000
0
6,000,000
8h
375
30
1
9
200
1,750
6,000,000
6,000,000
0
12,000,000
1d
375
30
1
10*
280
2,500
12,000,000
12,000,000
0
24,000,000
2d
375
30
1
11*
420
3,750
18,000,000
18,000,000
0
24,000,000
3d
400
30
1
* Note: Any level 10 or 11 building upgrade requires 1 Cerulean Core to construct.