This is Instructable contains all the information and source code you need to build a fully functional MemAxe.What is MemAxe?
MemAxe is an electronic game that tests your memory by making you copy a sequence of sounds using switches. The sounds emulate those of old 8-bit game consoles.
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In the first round it plays one of 4 different sounds at random. Each sound represents a different switch on the device. After the sound is played you get a turn to copy the original sound by pressing a switch. If you get the sound right, MemAxe will play two sounds in the next round and so on. The limit is about 80 rounds.