Building: Sentinel Base

Sentinel Base - Place a Sentinel here to counterattack invaders. Upgrade the Sentinel Base to increase its Sentinel's attack range and defensive capability.

	Level	Space	Upgrade	HP	Attack Range
	1	2 x 2	100	3000	12
	2	2 x 2	300	3400	13
	3	2 x 2	1600	4000	13
	4	2 x 2	3600	4600	14
	5	2 x 2	8100	5200	14
	6	2 x 2	13500	6000	15
	7	2 x 2	24800	7000	15
	8	2 x 2	47300	8200	16
	9	2 x 2	73100	9400	16
	10	2 x 2	126000	11000	17
	11	2 x 2	360000	12600	18
	12	2 x 2	627000	14600	19
	13	2 x 2	720000	17000	20
	14	2 x 2	825000	19600	21
	15	2 x 2	945000	22800	22