Strict monospaced 3x5 font. Reasonably legible and balanced. Includes upper- and lower-case, digits, punctuation, the whole lower half of CP437. Largely derived from Tom Thumb (MIT or CC-BY 3.0 or CC0 license): http://robey.lag.net/2010/01/23/tiny-monospace-font.html
Check out the details for a more accurate preview. Bold and blocky fonts are my fav. However, a lot of the blocky fonts I find are typically limited and offer a single style. Therefore, I made two options for this font: the lowercase is a solid version of the slotted uppercase with slight variation on key letters.