I never knew that sorting and counting change could be so engaging. That is, at least, before I tried ChangeReaction and got hooked on its unique twist on the match-three formula. It’s an audio game — a video game without graphics — designed with blind people in mind, although sighted folks can certainly enjoy themselves too.
Unlike a regular video game, where you act on both visual and auditory stimuli, ChangeReaction is entirely predicated on what you can hear. You piece together the scene and gauge your progress, and do pretty much everything, solely by listening to sound effects and voice samples and pressing keys on your keyboard.