Sometimes there is a bug when I have two steps with the same key. My first hit is associated with the SECOND step and my second hit with the FIRST step, so it gives me a perfect and a miss instead of two fantastics.
Controls suck and NEED to be customizable. You should be aware that some combinations of 3+ keys are impossible to do on most keyboards (hardware limitation).
The keys are badly chosen due to conflicts on most keyboards (it's impossible to use some combinations of 3 or 4 keys), so it's just technically impossible to control the two chars as wanted simultaneously.
@luketheenigma : 0 *is* a natural number. A natural number is a nonnegative integer number : N = {0, 1, 2, ...}. It is not equal to the set of (strictly) positive numbers N* = {1, 2, ...}.
Wonderful game, very addictive and challenging. Have still Judiciary and Metatron to complete. Have both solutions but not enough space to encode them :-/. There must be a better solution of an optimized code...