Key Master is a one player prize redemption arcade machine from Sega.
Players use buttons to control a "key" mechanism, and must aim to slot the key into the keyhole of their desired prize.
If players are successful, the key will unlock the prize and it will be pulled from the rail and dropped into the prize chute.
The machine allows for 3 prize levels (minor, medium and major) and has operator adjustable difficulty settings.
Available in white, black, yellow, blue, pink, green and orange.