I released Subroc on July 1, 2010. The idea was to capture the look of handwriting scrawled on a whiteboard, graceless and everyday rather than calligraphic. To build it, I drew with a marker, then scanned the results and used Photoshop to add a speckled texture. That texture was baked into the image before I traced it to vector outlines, giving the letters a worn, vintage quality. Subroc remained a single style with no variations.

It was always a commercial release and was intended mainly for informal display uses like posters or signage where a casual, hand-drawn feel was appropriate. I named it after SubRoc-3D, a Sega video game from 1982 that used stereoscopic graphics in a periscope-shaped cabinet. The typeface itself had no connection to the game; I just liked reviving obscure game titles as font names.

On June 18, 2021, I updated Subroc by fixing spacing, swapping reversed quotes, strengthening fraction support, and adjusting vertical metrics for better browser compatibility. On November 21, 2024, version 1.103 repaired minor vector glitches, improving outline precision and visual consistency. The typeface has not seen notable external use since its release.