I'm a synth and music nerd, so this was a treat. I've never had something that asks me to recognize pitch with the addition of timbre and harmonics, so I thought that was very original and fun to figure out.
Like the others are saying, more waves get much more difficult. For me, it was hard to separate prominent overtones in the harmonies from their fundamentals when I'm just listening to a drone. All the pitches start to meld together and I question whether what I'm hearing is a fundamental or not.
A couple suggestions:
- While I think setting the levels of each pitch is a good mechanic, it might be better suited to harder levels only. Just getting pitch and timbre is difficult enough to begin with.
- In order to reduce ear fatigue, it might be cool to press space (or whatever) to hear a pluck or pulse envelope instead of just the drone.
This game is seriously cool.