A tiny "guess what I'm thinking about" game, or an identifier.
This is a tiny game : think about something and answer the questions the software asks.
The goal is to have a "identifier" which is able, for instance, to find which mushroom you have in your hands.
Intervalence is a very simple, minimalistic program for musicians, designed to test their ability to correctly spell musical intervals. Question: What is a perfect 5th above A#? Answer: E#