Mines is an originals game in which a fixed number of mines is hidden in a grid. Every square opened safely raises the multiplier and you can cash out at any moment. Hitting a mine ends the round and the stake is gone.
How the multiplier arises
The multiplier is pure probability: the more mines and the more squares already opened, the smaller the chance of the next safe square and the larger the multiplier. The house edge is usually 1%, i.e. an RTP of 99% — the same as in dice.
The only real decision
How many squares to open before exiting. That does not change the expected value, only the volatility: three squares with five mines is a frequent small win, ten squares is a rare large one. Patterns ("the corners are safer") are a myth — the layout is new every round.
Verifiability
Mines is provably fair: the mine layout derives from the server and client seed and can be recalculated after the round. That is the only way to be sure the layout did not change after your clicks.
Wagering
As with the other originals games, the weighting in bonus wagering is mostly zero or very small. Check the table before taking a bonus.