A stout, slab serif, large countered, heavy sided, pixel font.
This is not just another tile set that simply uses a wider variety of brick in each glyph. I added "twists". I wonder how long before someone notices ;)
Underground is based on the typeface used on The Velvet Underground's debut album "The Velvet Underground & Nico" from 1967. Currently only the A-Z, a-z, 0-9, and basic punctuation are available.