About the game
Crack an intricate number vault made of independently turning metal rings. Align the numbers in each column until every column reaches the target sum. Emerald indicators in the centre reveal which columns already fit.
Choose 3–5 rings, 4–16 columns and a target sum from 30 to 100. All three settings are independent. Every generated puzzle is solvable, with a new arrangement each time.
The vault opens when all columns are correct together. The result shows your moves, active time and hints used. There is no time limit.