| Collection Cycle | Unlocked at Level | Footprint | Type |
|---|---|---|---|
|
14 hours |
5 | 6 x 6 | A |
| Lvl | Base Income |
Upgrade Cost |
Upgrade Time |
ROI* | IPH** | Event Bonus |
Item's Category*** |
|---|---|---|---|---|---|---|---|
| 1 | $598,291 | $80,000,000 | 24:00:00 | 1,895 | $48,263 | Skull Grenade 26,650A / 23,632D +1% Expl. Attack |
E |
| 2 | $1,794,873 | $133,600,000 | 30:00:00 | 1,608 | $125,205 | Skull Grenade | E |
| 3 | $3,589,746 | $223,112,000 | 36:00:00 | 1,812 | $256,410 | Skull Grenade | E |
| 4 | $5,982,910 | $372,597,040 | 42:00:00 | 2,284 | $427,351 | Skull Grenade | E |
| 5 | $8,974,365 | $622,237,057 | 48:00:00 | 3,056 | $641,026 | Skull Grenade | E |
| 6 | $13,162,402 | $1,039,135,885 | 54:00:00 | 3,643 | $940,172 | Skull Grenade | E |
| 7 | $18,547,021 | $1,735,356,928 | 60:00:00 | 4,718 | $1,324,787 | Skull Grenade | E |
| 8 | $25,128,222 | $2,898,046,069 | 66:00:00 | 6,416 | $1,794,787 | Skull Grenade | E |
| 9 | $32,906,005 | $4,839,736,936 | 72:00:00 | 9,016 | $2,350,429 | Skull Grenade | E |
| 10 | $44,871,825 | $8,082,360,683 | 78:00:00 | 9,748 | $3,205,130 | Skull Grenade | E |
- ROI (Return On Investment) = Time until the upgrade pays for itself, in hours
- IPH = Income Per Hour
- Item's Category = M - melee, A - armor, G - gun, E - explosive, C - car