Well I just dove down the rabbit hole of your arduino console. That is fascinating and I want to try it but it's far too late at night to read that much code :P
Eliminate all the niderite crystals by pushing one onto another. Avoid ants, open doors with keys, oh my. You can even try to kill ants with niderite, but it's not easy.
Controls: arrow keys, or WSAD, or clicking near the border (annoying). If the controls do not work, open it in new tab/window http://drcz.github.io/mini-ld-67/
This is very short game made for mini Ludum Dare 67, actually a remix of my older game, who cares...