The Blast perk is a powerful feature of the Tesseract that provides bonus Sparks. When activated, the Blast unleashes a wave that starts from the Tesseract building, giving additional Sparks from all mine locations within its radius.

You can upgrade the Blast radius using T-Cores, which will make it cover more shafts.

The Blast always includes the Elevator and Warehouse buildings and expands to deeper shafts with each level. 

No Spark bonus is given from locked shafts, so make sure to unlock them first! 

After activation, the Blast goes on cooldown. 

The Blast is triggered automatically after each Blast upgrade or can be activated manually.