Thank you for the comment! Legibility and useability was my focus here - things like the double-wide curly brace lines to make them easily distinguishable from square brackets, and all numbers being the same width so the font can be used with dynamically updating values, etc. You're right that it's easy enough to fit everything in 5x6, but a pet peeve of mine is those 3-wide M's in a lot of tiny fonts that are almost indistinguishable from the H. This was an attempt (without monospace restrictions) to reduce all characters to minimum legible, cohesive width, and I've been using it in personal projects for a while now as my tiny option. My experience was with bad tiny fonts that were too compressed (i.e. a slanted M can fit in 3-wide or 4-wide legibly, but looks ugly and out of place), and the goal here was not so much to make the smallest font as to make the smallest good font. I personally think the many 2-wide characters here make up for the occasional 5-wide ones, which is why I still use this font today, but your mileage may vary.

Thank you zephram, and sorry it took a bit to reply. It's strange to be getting all these comments four years after posting this font... but also awesome!

Your 3- and 4-wide M and W are very nice, but I still personally prefer having at least 1px whitespace between each bar. It kind of eliminates that pause when you're skimming quickly over words, especially when readers haven't seen an N in your font yet and hit their first M, or W without seeing U, etc. In my opinion, low width monospaced fonts only really started because of necessary hardware or physical space restrictions, and I would rather capture the feel of one then stick to all of the rigid limitations that created them in the first place. But I'll be honest, looking over this font years later there are a couple of symbols I would do differently today, and I really appreciate the discussion and feedback I've been getting here lately.

You guys have definitely given me a lot to think about, and I might revisit this issue with a smaller or monospaced font in the future. 3- and 4-wide are definitely doable, but I think the rest of the font needs to be built around the forced slanting you'd have in your Ws and Ms and such.