Abstract: A method and system for making a plurality of bonus games available on a gaming machine. The bonus games each have associated bonus game instructions. The bonus game instructions are stored in a bonus game memory. The bonus game is selectable by a player of the gaming machine. The bonus game instructions are removed at a predetermined period of time after the bonus game instructions are stored in order to provide storage for new bonus games. Alternatively the bonus game instructions may be removed if the bonus games are not played frequently. The bonus game may be part of a channel including a plurality of bonus games. The channels of different groups of bonus games may be displayed to the player to assist in bonus game selection.

Abstract: A semiconducting photodiode for detecting light at a predetermined wavelength includes a first semiconducing region having a first conductivity type which is a quaternary alloy of Hg, Mn, Cd, and Te. A second semiconducting region having a second conductivity type electrically contacts the first semiconducting region, such that a semiconducting junction is formed between the first and second regions. The relative proportions of Hg, Mn, and Cd in the first region are selected so that the bandgap energy of the first region is approximately equal to the spin orbit splitting energy of the first region at the desired wavelength.