Initially, one auto-clicker, the "phantom hand", should be enough. Give it an initial cost of say, 10 mushrooms.
Remember to limit the amount of "clicks" it actually generates per second to something sensible (at least 10, but no more than say, 50, this will need further experimentation and analysis). When this limit is reached, increase the number of mushrooms per "click". This probably means that the number of mushrooms will have to be stored internally as a floating point variable.
Auto-clickers should be purchaseable at a cost.
Initially, one auto-clicker, the "phantom hand", should be enough. Give it an initial cost of say, 10 mushrooms.
Remember to limit the amount of "clicks" it actually generates per second to something sensible (at least 10, but no more than say, 50, this will need further experimentation and analysis). When this limit is reached, increase the number of mushrooms per "click". This probably means that the number of mushrooms will have to be stored internally as a floating point variable.