This was a tiny bitmap font for a game.

Then I added a bunch of glyphs to support most European languages: Spanish, French, German, Portuguese, Czech, Polish, Turkish, Russian, Ukrainian, etc. 

Then, inspired by a recent trip to Georgia, I added Mkhedruli characters just for fun (never really saw a pixelated Georgian font before, so I figured, why not).

And so now this exists.

See more:

http://paratype.livejournal.com/59899.html

Supported languages:

English

French (Français)
German (Deutsch)
Spanish (Español)
Scandinavian alphabet

Latin (Lingua Latina)
Czech (Čeština)
Dutch (Nederlands)
Polish (Polski)
Turkish (Türkçe)
Latvian (Latviešu)

Africa alphabet
Pan-Nigerian alphabet
Americanist 
Khoisan
Pinyin (汉语拼音)
Romanian (Română)

Russian (Русский)
Belorussian (Белоруская)
Bulgarian (Български)
Serbian Cyrillic alphabet (Српска ћирилица)

Carthage Sans LKE is an expanded version of my Carthage Sans font, which in itself is a reimagining of Apple's Espy Sans 12 bitmap font. It aims to cover as much as possible of the Latin, Cyrillic, and Greek blocks of the Unicode standard (thus the initials -- "Latina, Kirilitsa, Elleniki"). I'm open to expanding it to any of the other scripts Unicode covers, but I have little to no personal experience with most other alphabets; if you'd like to contribute, I'd particularly be interested in Arabic, Devanagari, Katakana, Hiragana, Armenian, and Hangul. (I would like to add Hebrew as well, but it's hard to get the diacritics right in what's essentially a pixel font. We'll see.) The current status as of 10/28/2015 (the date of initial publication):

-Latin: all of Latin-1, Latin Extended-A, and "Even More Latin"; Latin Extended-B is missing some characters that seem to be mostly either phonetic notation or obsolete.

-Greek: All Greek characters supported by FontStruct. If you need some of the ancient dialect characters like Pamphylian digamma, they're now in the GitHub version; polytonic will appear there as well, if anyone asks for it. Basic Coptic support is there, although I tried to fit it into the Espy Sans aesthetic rather than trying to duplicate the Byzantine-Egyptian traditional style.

-Cyrillic: Still a work in progress, but all Slavic languages using Cyrillic characters should be covered. The main holdup is Abkhazian, which is spoken by just over 110,000 people in the world and also has one of the longest alphabets in the world; I have no idea how many of them would be interested in this, so it hasn't been a huge priority. (Besides, the PT family from Russia's Paratype is excellent and far better than I could do with most Cyrillized languages.) I've emphasized support for several languages, the most important being Vietnamese (75 million speakers deserve some support no matter how tedious it is to do so).

I've also added characters for Old Irish, Old Church Slavonic, and Icelandic. There's a number of characters used in pan-African linguistics I am not sure if I need or not; they'll get filled in eventually alongside the Cyrillic, but how fast I have no idea.

Carthage Sans extended version on GitHub: https://github.com/csyde/carthage-fonts

I am deeply indebted to Keith Martin (@thatkeith on Twitter), formerly of the UK MacUser magazine, and his Espy Sans Revived project for a reference for the original letter bitmaps; Carthage is entirely my work but it's hard to find Espy Sans specimens in the wild, and his work is probably the best.