It's possible it isn't a font, or at least a terribly professional one. It doesn't look like the verticals and horizontals have been optically reconciled.

I would think that you could more or less easily elaborate on it using a grid of square cells.

See also Nuephoric and Poca.

Thanks guys, really helpfull! I think I will make a grid (i'll start with 5x5) and make the other letters myself. How hard can it be ;^D