The 5x5 pixel font used for the Virtual Gremlin, an old emulator/game I wrote. The standard font for ingame text.
This font was also designed to work well with IRC clients and ASCII games (see sample).
Breaking the 5x5 grid was unfortunate but necessary in order to make legible characters in non-Latin languages.
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.
Also, check out Eneminds Thin for the non-bold version of this font.