The development of the slot machine game sector from computer controlled slot machines to video slots and the increasing popularity of internet based gambling dens and mobile wagering open a world of opportunities for casino game designers to develop new kinds of game routines. In this new environment the potential of increased, even unlimited, gambler interaction arises. Casino game developers must grasp the transformation and create innovative games that generate the most of it. Attractive game ideas are needed which will catch the interest of the gamblers by offering them new and exciting possibilities, yet not too new and diverse that the players are alienated. Succeeding in attracting gambler attention and interest is critical because of the size of the industry. In the United kingdom, as an example, betting makes a substantial contribution to the economy with an estimated expenditure of 8,875 million pounds (point eight per cent of United kingdom Gross domestic product (Betting Act, ‘05)), of which 1.74 billion pounds is made in costumer losses wagering slot machines (Gaming Board, ‘05).

Slot machine game will need a corresponding mathematical model to generate certain the casino game is profitable and to accurately compute the minimum house advantage. In those games that the gambler has an input, the gambler’s optimal technique must be worked out in order to calculate the minimum casino edge. Probability, Operational Research techniques and Stochastic Processes are employed to create these models. Very good programming abilities are also required. If video slot machines slots are to allow games to be extra interactive these games could become more advanced and, consequently, extra hard to model. This is really a technical job that only well educated experts can perform.