"The Star Laboratory searches the heavens for secrets to unlock a troop's full potential. Improve troop hitpoints, damage and housing space in addition to special troop abilities!"
| Level | Hitpoints | Build cost | Build time | Experience gained | Builder hall level required |
|---|---|---|---|---|---|
| 1 | 650 | 1,000 | N/A | N/A | 2 |
| 2 | 800 | 15,000 | 10m | 24 | 2 |
| 3 | 975 | 50,000 | 30m | 42 | 3 |
| 4 | 1,150 | 300,000 | 8h | 169 | 4 |
| 5 | 1,350 | 700,000 | 12h | 207 | 5 |
| 6 | 1,600 | 1,000,000 | 2d | 415 | 6 |
| 7 | 1,850 | 2,000,000 | 4d | 587 | 7 |
| 8 | 2,150 | 3,000,000 | 6d | 720 | 8 |
| 9 | 2,450 | 4,000,000 | 8d | 831 | 9 |
| 10 | 2,750 | 5,000,000 | 10d | 929 | 10 |
Tapping this icon displays information about the Star Laboratory, such as Level and Hitpoints.
Tapping this icon begins upgrading the Star Laboratory to the next level, if you have enough resources and a freeMaster BuilderorO.T.T.O. When the Star Laboratory is at maximum level, this icon is not shown.
Tapping this icon instantly upgrades the Star Laboratory to the next level, at the cost of oneHammer of Buildingif you have one. When the Star Laboratory is at maximum level, or theBuilder Hallrequirements for the next level are not met, this icon is not shown.
Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of the displayed number ofGems.
Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of oneBook of Building. This icon is only shown if you have at least one Book of Building.
Tapping this icon, which is displayed only while an upgrade is in progress, instantly finishes that upgrade at the cost of oneBook of Everything. This icon is only shown if you have at least one Book of Everything but do not have a Book of Building.
Tapping this icon, which is displayed only while an upgrade is in progress, cancels the current upgrade and refunds half of the upgrade cost.
Tapping this icon opens up the Star Laboratory interface, allowing you to upgrade yourtroops'levels.