hmm needed to press almost every key on my keyboard to figure out which key is that O or 0 or whatever that circle with a dot in it is. actually it was C on my keyboard. consider that people are using different keyboards from yours (C is at that position on every english and german keyboard and maybe on some others). it’s dangerous to hard-tie to keys without configuration for other languages. this first contact was a bit confusing – could’ve been done with number keys 1+2 as well and you wouldn’t have such a hazzle for international gaming people.
aside from that, nice idea, must have been quite some work to set this all up! well done!