the manufacturer of this Match for people with a color vision deficiency. My girlfriend likes to play Zuma Deluxe. I usually can not play, because there is always more colored balls by several levels, which I with a color vision deficiency, could not tell. Now I wanted her to do something good and have Zuma`s Revenge bought and knew in advance that I am then only spectators. Today I have rumgeschaut in the settings and lo and behold, there is a button "color blind". Switched on and ....... excellent, even now I can play this game without any problems and will now play times my friend on the wall :-)